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Hah, I didn't realize Erich Gamma was involved with VS Code (partly because I'm not a big Code user, and was always an IntelliJ over Eclipse kind of person). Gamma and Hejlsberg really are quite the pair that MS picked up all those years ago.

I see here yet another failure of Open Core to work out for the creator of an Open Source project. $27B of apparent value for an editor, none of it realised by Microsoft; and the value/lock-in proposition actually ended up being ripe for vendor-neutral duplication.

(I suspect the next round of attempts at productising "foundational" open source tools will need to focus much more on providing an open market for packages/extensions/etc rather than treating them like a lock-in opportunity; every current tool has probably missed their shot at that now)