If MS ever decided to discontinue VS Code or relicense it, there would be blood in the water. I guarantee you there would be multiple compelling competitors in under a year and probably a new open source winner with consolidation in 5.
So to answer your question: they would be forking Atom (which I think would’ve won otherwise).
Not saying there aren't people who care, there are, but they are a small minority.
IMO sounds like natural foundation for Cursor
I haven't used it in a decade, Im sure it has has evolved
Can’t say I miss eclipse, but a lot of the VSCode extensions seems to utilize old legacy eclipse stuff and has the bugs to match.
If not you really should. IntelliJ with Java is one of the best dev experiences I've ever had. I'm a VSCode fan for most other things but for Java I wouldn't even remotely consider using it over IntelliJ if I had the option :-)