I think it's pretty notable how most of the explosion happened since stable diffusion released their model and code as open source, while Dall-E generated initial excitement with their closed source model, but limited progress / creativity since. It's a pretty nice demonstration I think of how much innovation can happen from openness.
Yes. Example #5*10^7 or so. Some people are just opposed ideologically or due to temperament. Locking things down is one of the best ways to make them die