Honestly, I think the same as you. Maybe not 10 people, but even being generous, it would be below 500 people. The thing is, when these companies get funding, they start hiring more than they need.

So while before you had maybe 3 FE devs, now you have a whole team. Before you had only one Product Manager, now you have a “Product Owners Team”. Before you had 1 QA, then 1 QA per team, and now a whole QA team. And the same goes for marketing, UI/UX designers, and of course HR and accounting. Where the numbers really blow up out of proportion is IT and Marketing.