Except there are a massive amount of android devices and windows PCs in the world. Apple controls a small portion of devices in my opinion. I think they are the smallest whale in the ocean these days.
Just consider what would be if Apple had the same market share on devices/PCs/smartphones that Facebook has on social media, it gets scary.
Haha, funny. That was true with Balmer, Microsoft's current CEO transformed the company to consumers worst nightmare, they are worse than the three you labeled as intrusive - with them you can opt-out, and it's just a website or phone OS, but with Win10, Office365/2016 you and your lawyer, your doctor, your bank clerk cannot opt-out and leak your private data.