They own Typescript? I wasn’t aware that they control the organization, but that ought to be easy enough to fork. NPM is a bigger one, but also not too huge. Azure is only used by people who already have Microsoft/Windows buy-in.

They created TypeScript, and maintain it now. It's not exactly a business for them, no one is buying "TypeScript Enterprise" subscriptions. It's all under the Apache License 2.0 and certainly big enough that if they started pulling anything untoward, it would see a fork. Sometimes Microsoft produces an unalloyed good, they're not a monolith.