[djray]

A lot of conspiracy talk here, backed up with nothing other than a note that the AI chat API isn't public yet.

I'd argue that MS has been on a very different trajectory since the "Linux is a cancer" Ballmer days, and open source is a big part of that movement. I never thought I'd see them buy and open source Xamarin, or open source the entire C# compiler and .NET Framework. It's worked well for them - .NET is being actively developed by many volunteers as well as the core MS team, and performance has improved significantly in the last few years. There are a lot of associated technologies being developed in the open, too, like Terminal, the C# language itself and so on. I find it difficult to think that this was all a grand plan to extract more revenue out of devs. Rather, I think MS realised that it was instead a "rising tide lifts all boats" situation, whereby bringing more devs into the fold - including those on Linux and Mac - would be mutually beneficial. Let's not forget, Visual Studio Community Edition wasn't around until relatively recently. The only legal way to get Visual Studio was to fork out for a Pro or Enterprise licence.

As for AI integration into VS Code, I share kaelini's opinion that the chat feature is still new and possibly very alpha (it's certainly not very fast at the moment), so that's probably why it's not all been open sourced. But, of course, MS is perfectly within their rights to release closed-source extensions to the VS Code marketplace - the new C# Dev Kit is a case in point here.