I think people that spend enough time to learn to use a game engine will go to the trouble of finding the best site / source for assets. Unity and Unreal both have good sites for this, but that's partly because it is there business model. Godot is just not as much of a business. It seems like the two great potential business (attention HN types :) ) are:
- asset / plugin library stores
- simple libraries / frameworks for console ports that are not open source / or a port service.
Well, maybe it should be. I don't think anyone would begrudge the Godot team taking a small percentage as part of running an asset store, and that means more people who can work on Godot full-time, in addition to the convenience of the asset store itself.
I wouldn't want Godot to go full blown for-profit public corporation, but having more full-timers and more of a real business model like some other open source foundations sounds good to me.