Dev tools. The debugger is something for example that Microsoft ostensibly keeps to their own products, and how they totally slaughtered omnisharp.

It killed my daily csharp vscode driver couple of years ago, only now catching back up somewhat, but still unusable for bigger solutions.

That move made me gravitate towards vscodium, and avoiding csharp where possible.

Microsoft's move only recently got more understandable to me, because Cursor and others basically stole vscode to establish their "empire".