The exact opposite of the case. Normalized by account it's (often) the little users, by lots. Normalized by dollar value it isn't even funny.
1) Because they have internal teams to support them on functions that otherwise get kicked to you. If you sell a $19/mo SaaS you have to bundle in a lot of basic IT support; if you sell $999/mo SaaS then they have an IT department for that.
You will have tickets whose underlying cause is "my hard drive failed." They will disproportionately be from your lowest-value accounts
That's not what you're seeing.
There are many variants of this: "My hard drive failed and I need a year of invoices for tax purposes." "My hard drive failed and I lost report." etc
You wouldn't make a seating chart in bingo card software. Trust me: many people would.
I literally built a Seating Chart Mode. Not a joke.)