I can't see how you can shoulder the blame of (possible) failure of FOSS dream on developers. Devs (usually) don't control budgets and can't really ask for money to pay for freely licensed code. If blame is to be given then I'd point to money handlers for not acknowledging this situation.

Then there's the question of what I should be paying anyway. Who among all those non-free developers are paying in turn to all the professionals whose code they build on? Are proprietary developers somehow exempt from paying themselves? If and when I choose to pay I like to think all that contributed are getting the benefit.

There's a long line of professionals behind every code that should have been paid. Certain percentage might have tried to get paid. And even some who in fact did get paid.