>> Those turtles didn't need to use funding pre-doc-com-boom, they were passion projects and people with time devoted to the "cause" of FOSS.
Except they kinda did. The foundations of FSF are born by academics working at institutions, getting paid salaries. The were devoting time certainly, and certainly in the case of RMS with passion and cause, but that work was definitely funded - usually by the university.
>> Perhaps that's the problem: that they exist "at the level they do", meaning most of it is corporate focused, and not enthusiast and user focused.
I think we can drop the term "enthusiast". It implies tiny niche group with little practical value. I'm thinking of classic car "enthusiasts" who spend all their time under the car, and precious little driving it.
So let's talk about users. Users want full-featured reliable software. I would suggest all software, if successful, is user focused. (To he honest, I'm not sure what you have in mind with "corporate focused".) Firefox, to pick one project at random will seemingly live or die based on the individual user experience.
Equally take databases - there are s plethora of options to suit every use case. Need big powerful fast enterprise scale - Postgres is for you. Need small footprint with easy install - try Firebird. And a gazillion others. Surely such quality is a good thing?
>> Gnome, for example, wasn't created to give RH and co a desktop shell for corporate installs...
Um. Sure it was. It was designed to offer a gui desktop on top of Linux. Who did they think would use it if not Linux distributions? Given that for decades "the year of Linux on the desktop" was a meme, I'm not sure it's fair to claim that distributions using Gnome to create desktops for business users was a surprise.