I left LinkedIn before MS bought it, because it was clear it was being copied by all and sundry.
I left GitHub once MS bought it (and I thank God for that, ever time I see another story about MS being awful).
I never used Google - they were obviously evil and from quite early on.
I may be completely wrong, but I think large companies are completely amoral. Not in a malicious way, but in a can't-be-anything-else kind of way; that is is an emergent property.
All large organization have absolutely no moral sense, which is to say, doing things because they are ethical, regardless of costs or benefits, or possessing a capability to assess or modify their own actions on moral criteria.
Complaining MS do these things is like complaining a cat jumps on a mouse.
I'm not a fan of brutal mouse death, so I don't own a cat.
What's critical of course is knowing this, and before deciding to buy into what these companies offer, rather than discovering it after buying into what these companies offer.
And these companies will only tell you how wonderful their services are, and nothing about what they're up - nothing about how much and what data they collect, and what they do with it (give it to the State, sell it to all and sundry, with real-time updates included), or what's done with it (mandatory State mass interception).