I totally agree with you, Next has introduced some innovative ideas and created a framework on top of react that rivals the quality of the react codebase itself.

However, this is the foot in the door that creates incentives that prioritizes their business model over creating a vibrant and healthy ecosystem.

Now that the react dev team and next dev team are closely working together, to the point that the react team is part of the nextjs conf announcements, it really starts to show the wolf in sheep's clothing.

This is not an open ecosystem anymore, it's being run by FB and VC money.