All build tools that MS doesn't control. Their strategy has always been to try lock developers into their ecosystem so that only their ecosystem has all the software people want.
> Which things do you think they extended?
Acquiring and extending both Xamarin and Github. Atom editor is basically dead, MS/Github created an AI tool that presumably uses data they got from Github, they tried to remove features from free .NET tools, etc...
How long until they try to apply some more blatant vendor lock-in techniques with Github, .NET/Mono or maybe Azure?
Pointing out stuff from decades ago doesn’t really count as still proven tactics.
Though of course all major companies do behave and do things like EEE in different ways.