I don't really think this would be the end of the world, would it? Much of the content they've added over the past few years has been of questionable merit, at least to me. Surely at some point they'll run out of ideas that can reasonably fit inside vanilla Minecraft?

(But no, I don't think they're going to stop JE development. I'd bet it's still the far more popular version, and they probably still make plenty of money from sales)

-Surely at some point they'll run out of ideas that can reasonably fit inside vanilla Minecraft?

Exactly...? How much content is built with Bedrock edition and Marketplace Add-on's?

I'm pretty sure Bedrock Edition is far more popular if you take all platforms into account.

But I agree Java Edition is not ending any time soon.