Switched? The Windows Insider has 3 different tiers for testers: Dev, Beta and Release preview and still update rollouts are an example of how not to do it
It's not like their customers have a choice. If software you depend on only works on Windows you can't just say I'm done with this circus, where is my Ubuntu stick. Seems like a massive gap for regulators to close as some might say Microsoft is abusing their privileged position. Though I wouldn't hold my hopes up. Given how they have penetrated many governments with their services and software, they might thread carefully before getting Microsoft to act decent (see inaction over sentencing millions of PCs to landfill - at odds with many countries environment policies, but most politicians keep their head in the sand).