Great, now do Linux. Or cURL. Or Clojure. Or Perl. Or Python.

Great tools can, and often do come from solo developers without large corporate backing.

So the top contributors of modern Linux are large corporations. cURL is not a framework

And isn’t that the ultimate in survivorship bias? How many other languages and frameworks would you have left you screwed if you jumped into whole hog in before they had popular uptake?

Linux was started by one man, and the qualification as “framework” is immaterial to your point.

And was it actually used or became popular before it was adopted by and had contributions from major companies?

Actually, yes! And you are conveniently ignoring the other examples that don't fit your world view.