I use Microsoft products for business (though I'm trying to phase them out). I don't care that much about their competitive practices (from a business perspective) and there's even the upside of a pretty uniform productivity software/ file format ecosystem that makes communication easier.

Committing corporate espionage, which is what their software does now, on the other hand, makes me not want to use them at all. I have agreements with customers about protecting their data, how can I use software that steals everything I put into it and sends it to MS? This is a much bigger deal. (Although I agree you could argue their earlier anticompetitive practices gave them the monopoly that allows them to run their current criminal spying empire unchecked)