Tren Griffin Profile picture
Jan 16, 2022 6 tweets 3 min read Read on X
1/ Understanding why SpaceX's Starlink constellation currently has ~1,800 active and soon to be active satellites and the OneWeb constellation currently has fewer requires that you examine the inherent trade offs given the physics of wireless and how that impacts unit economics.
2/ OneWeb's higher orbit means fewer satellites and gateways are required to cover the Earth and this reduces system costs, but higher orbit translates to a worse link budget which means the signal isn't as strong as in lower orbit. To learn more: itu.int/en/ITU-R/space…
3/ "I don't care" you say. "When do I get the Starlink terminal I ordered?" The issue usually for people in the northern US now is capacity not coverage. There's only so much capacity in a cell and it is shared. Will capacity increase over time? Yes, but it is not unlimited.
4/ Wireless of any kind is most valuable when the user is mobile or the economics of fiber or cable break. At a point there isn't enough density and income to support a wired connection. You can see this in the cable/fiber footprint. Cable won't service some homes even in cities.
5/ Mobile users are willing to pay more for capacity.

"At current pricing, a typical fixed wireless access customer generates about $50 of revenue per month, or about $0.10 per GB. An unlimited mobile customer generates $48 per month, or about $4.36 per GB." MoffettNathanson
6/ How do satellite constellations get more capacity? Inverse square law! Make the satellites bigger enabling more power from more solar cells, because there are no electrical outlets in space. Gen 2 satellites will therefore be heavier. What do bigger Gen 2 satellites need? BFR!

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More from @trengriffin

Jan 1
1/ A friend asked me to summarize Charlie Munger's framework with a few of his quotes from after my book was published. "Extra points for a short explanation."

Four categories form a checklist and create the pneumonic "RISE”:

Rationality
Inversion
Self-Regulation
Emulation Image
Rational:

"There's hardly anything more important than being rational or objective. Think of the people who are just utterly brilliant who do some of the dumbest things. You won't have any trouble thinking of examples. It's hard to be rational." Image
Inversion

"The way complex adaptive systems work, and the way mental constructs work, problems frequently become easier to solve through inversion. If you turn problems around into reverse, you often think better."

Be smart by not being stupid Image
Read 5 tweets
Feb 25, 2023
John Malone: "At the moment, there’s a lot of blood flowing down the gutters, of people who are streaming, and some can afford it and some cannot.” hollywoodreporter.com/business/busin…
"With WBD backing out of their RSNs, when combined with the Bally Sports networks, 17 of the league's 30 clubs, or 2/3 of MLB’s total now are on the edge of financial collapse." forbes.com/sites/maurybro…
"The leagues are gonna have to be careful, they don't want to end up with a very high price premium service with no reach because then the kids will stop watching the sport." cnbc.com/amp/2022/11/17…
Read 4 tweets
Feb 25, 2023
Of the 300 poss I wrote on 25iQ the one about Steve Jobs was perhaps the trickiest to write. To make sure that everything I said was accurate I had every word checked by someone who was his direct report for 7 years. Steve Jobs would have been 68 this week.25iq.com/2014/12/28/a-d…
On the August day in 1981 Bill Gates hosted a summit meeting at the Seattle Tennis Club (pictured) on the shores of Lake Washington. Steve Jobs gave a mesmerizing performance. Macintosh would offer exponentially greater value than anything on the market. siliconvalley.com/2014/08/29/199…
One giant advantage of being born in 1955 was the the magic of the microprocessor arrived while you were in high school. This changed the world at just the right time for Steve Jobs and Bill Gates. That birth year meant you missed the Vietnam draft and were too old for disco. 🕺
Read 4 tweets
Feb 19, 2023
"Operating loss of $392 million."

"Adjusted Operating Income increased 34% to $137 million"

It's all about the adjustments.

amcnetworks.com/press-releases…
"I’ve never made an investment in the movie business in any way, shape, manner or form. It may be a very good place to make a living as an actor or a writer or something or a musician. But it’s a hard place to make money if you’re an investor."

Charlie Munger this past week.
Warren Buffett: "The nice thing about the mouse is that he doesn't have an agent. You know I mean the mouse is yours and he is not in there renegotiating and you know every every week or every month. [Disney] understands all of that very well."
Read 4 tweets
Jan 7, 2023
1/ What is Roku's customer acquisition cost (CAC)? What is churn? How about ARPU? Gross Margin? Do you understand Roku's unit economics? Can you calculate per customers CLV/CBCV? variety.com/2023/digital/n…
2/ "The YOY compression in platform and player margins resulted in gross profit growth of negative 2% YOY versus the 12% YOY growth in total net revenue. Q3 adjusted EBITDA was negative $34 million and we ended the quarter with >$2 billion of cash." fool.com/earnings/call-…
3/ Is nine months right?

"So churn is job one for 2023. You have to get your churn down because the customer acquisition costs means you have to have a subscriber for like nine months before you get a payback just on your customer acquisition cost. ca.finance.yahoo.com/video/streamin…
Read 10 tweets
Jan 6, 2023
OCT. 10, 1989

This estimate for Excel was across all platforms. Not just OS/2.
upi.com/Archives/1989/…
Steve Ballmer

"IBM was the bear and we were going to ride the back of the bear. You just had to try to stay on the bear's back and the bear would twist and turn and try to buck you and throw you, but darn, we were going to ride the bear."

threadreaderapp.com/thread/1098019…
pbs.org/nerds/part2.ht…

“IBM is proposing to take over the definition of PC desktop operating systems. Thru have a plan to design the operating system so that their hardware Micro Channel architecture and applications are tied in.” Bill Gates PC Week, June 24, 1991
Read 4 tweets

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