Tbf their core product is at risk by everyone and their mom having an "AI IDE" product.

If your existing, well-established product is at risk due to new, competing products that do things in radically different ways, immediately dropping your product to chase the competition from way behind is usually not the right move. Unless you have a significant moat around your ecosystem, what reason do users have to adopt your inferior copy instead of the thing you copied?

I firmly believe JetBrains would have a better chance of survival if they stopped chasing the AI hype and got back to work on their IDEs, accepting the fact that they'll have less users than before. Right now, they're completely lost.