> But do they? In my day job, outside of the occasional use of Visual Studio and developing on a Windows machine, I use no Microsoft products for development.
According to your comment history, you are using JavaScript or used it in the past at least, which usually means you've used npm, which is owned by Microsoft.
And since lots of "young" developers use JavaScript and TypeScript, most of them are also interacting with npm.
Microsoft has captured maybe a larger part of the developer market than you realize. Not by being amazing or with "Microsoft <3 FOSS", but by buying up lots of the market.
According to your comment history, you are using JavaScript or used it in the past at least, which usually means you've used npm, which is owned by Microsoft.
And since lots of "young" developers use JavaScript and TypeScript, most of them are also interacting with npm.
Microsoft has captured maybe a larger part of the developer market than you realize. Not by being amazing or with "Microsoft <3 FOSS", but by buying up lots of the market.