That they did, but VS had always been aimed at MS tech stack: VC++, VB, C#, F#. And then VS Code appeared seemingly out of the blue, rapidly becoming the editor of choice for languages all across the tech landscape.
I think the VSCode extension marketplace greatly helps with the huge breadth of tooling. Not sure if this is applicable to regular Visual Studio as well, I've honestly never used it.
Visual Studio (full edition) doesn't have extensions. It's a full blown IDE and everything is built-in. Despite having a similar name, the two products sharing almost nothing in common.
The first version of Microsoft made BASIC interpreters for any and every "home computer" that asked them to (and was willing to buy it). For a large chunk of the lifetime of the Macintosh, Microsoft was the largest Mac OS application developer, and cross-platform C++ tools was important for that. The Microsoft of "only one tech stack" is probably the outlier, more than the rule.
