Much has been talked about the apparent death of value investing. What I perceive though is value investing is having its El Farol Bar problem.
What is El Farol Bar problem?
If the number of people in the bar crosses 60, people don't want to go since it's too crowded. They would rather stay home instead.
Voila, you can build your model now!
People start extrapolating based on last week's data. Since other people are doing the same, it's not very helpful.
Whatever your model is, you will see the attendance data the next day and will know whether your model was correct.
At some point, the effective model of yesteryear's will also not work. The iterations are the only constant.
I believe markets act in a similar fashion.
In the 1930 and 40s, Discount-to-book value was in vogue, thanks to Graham and Dodd.
Then dividend yield reigned the 50s.
By 80s, Buffett's "owner-earnings" or cash flows, and more recently, it's the ROIC that seems to do the trick.
Perhaps, even more recently, it's the TAMs and LTV/CACs that have produced eye popping returns!
This is coming from a person who owns zero SaaS companies.
That's how it has always been, and that's how it is always going to be.