It seems that many people still find it difficult to comprehend what 1+ billion internet/computer users means for technology companies that are capable of scaling.
Technology solves problems, but it doesn't mean every "problem" is actually a problem, or that it's worth solving. There will always be outliers.
Investing in 50 companies and expecting 45 of them to succeed is called being a small business bank.
There are many VC backed companies that never state their valuation.
There are many VC backed companies that do state their valuation after every funding round and buy up all the press releases [on techcrunch, exhibit a] so everybody knows. So their secretaries, banking partners, trophy wives, and sycophants fawn over them more.
All of those companies have completely different 409a valuations, which are MUCH lower, because you can't just say "well 10% was sold for this much, so therefore 100% is this much". Nobody ever posts those.
The FASB accounting standards are also much more intelligent.
These valuations are literally only for impressionable people that don't want an intelligent valuation.
Here's actual data for those curious: https://www.theinformation.com/comparing-common-stock-valuat...
[1] http://pages.stern.nyu.edu/~adamodar/New_Home_Page/datafile/...
For every Facebook there are at least 10 Pets.coms or, worse yet, Enrons. I'm not sure how pointing out a single success justifies all valuations.