For the purposes of my argument I don't consider blender to be "very popular" in the same way that Chrome or even Firefox is. Blender has less than 2% of the number of users that even Firefox has. I think if Blender were to get Firefox-level popular (for example, over 100 million users), then it too would succumb to greedy corporate interests.
If you know of this funding model working successfully at the scale of 100 million users/customers or more, I would be interested to learn about it though.
I think what I was really trying to articulate is that eventually it seems to happen to everyone when they get big enough.
I could totally be wrong and I might be drawing unfair conclusions like most people, sure I will admit, but this is just how I feel about it. Maybe I shouldn't have said it so matter-of-fact because no I don't have any evidence that this always happens. A company might never get "too big", that's entirely possible too.