Businesses would. The problem with that is you have decision makers in said businesses who don't know any better, so Microsoft-all-the-things gets pushed down the line. Offices are all trapped on Windows 10/11 and using Teams/Outlook with Exchange/Entra/Azure chugging along in all its misconfigured glory. Heck, half the MSPs I work side-by-side with seem to only offer support on Windows machines.
It gets worse. When we go to the manufacturing side of the building, there's a high chance they're still using Windows 7. Yeah, still! And IT or Controls has no idea what to do with it since, well, it's still working. Is it secure? They don't know because the team is comprised of kids who memorized the CompTIA exams and use Windows 11 at home.
Trying to get the business world to switch to Linux with all that in mind is an impossible task. It's the same as asking an American city to rip out all its old infrastructure at once and replace it with new instead of patching the old. The cost and knowledge required for such a task is unthinkable, to them. Believe me, I've tried.
Microsoft was quite brilliant in the way that they shoehorned their way into the fabric of the way we do business, not just in the US, but on a global scale.