Microsoft has clearly taken notice. They're already starting to lock down the upstream VSCode codebase, as seen with recent changes to the C/C++ extension [0]. It's not hard to imagine that future features like TypeScript 7.0 might be limited or even withheld from forks entirely. At the same time, Microsoft will likely replicate Windsurf and Cursor's features within a year. And deliver them with far greater stability and polish.
Both Windsurf and Cursor are riddled with bugs that don't exist upstream, _especially_ in their AI assistant features beyond the VSCode core. Context management which is supposed to be the core featured added is itself incredibly poorly implemented [1].
Ultimately, the future isn't about a smarter editor, it's about a smarter teammate. Tools like GitHub Copilot or future agents will handle entire engineering tickets: generating PRs with tests, taking feedback, and iterating like a real collaborator.
[0] https://www.theregister.com/2025/04/24/microsoft_vs_code_sub...
[1] https://www.reddit.com/r/cursor/comments/1kbt790/rules_in_49...
But I agree with you about the first part, and I think it's awesome for me as a user that all this competition to build a matter mousetrap is happening right now! I'm not as certain as you are that Microsoft will end up building a better version. It's definitely one of the likely outcomes. But it's also totally plausible that Cursor or Windsurf can win the race, even if they need to replace every single one of the MS extensions and entirely diverge the core IDE from upstream. These products are well capitalized and it's just not that hard to build the core pieces of an IDE.