Eclipse (as in ecosystem) is fairly popular in Enterprise, but since it exposes all the knobs, and is a bona fide IDE which has some learning curve, people stay away from it.
Also it used to be kinda heavy, but it became lighter because of Moore's law and good code management practices all over the board.
I'm planning to deploy Theia in its web based form if possible, but still didn't have the time to tinker with that one.
Using Eclipse as "the Java LSP" in VSCode makes more sense now.
Nevertheless, as much as I respect Erich for what he did for Eclipse, I won't be able to follow him to VSCode, since I don't respect Microsoft as much.
So not also using Github, LinkedIn, TypeScript (any FE framework that uses it), any Microsoft owned studios games, no Linux kernel contributions, GHC contributions,....
It is kid of hard to avoid nowadays.
Here a session with him related to VSCode history,
"The Story of Visual Studio Code with Erich Gamma and Kai Maetzel"
This is why I used "(as in ecosystem)" in the first paragraph. It was a bit late when I wrote this comment, and it turned out to be very blurry meaning wise.
Also it used to be kinda heavy, but it became lighter because of Moore's law and good code management practices all over the board.
I'm planning to deploy Theia in its web based form if possible, but still didn't have the time to tinker with that one.