Apple pioneered both the tax evasion schemes and "ecosystem lock-in" anti-competitive practices that Google has tried to replicate (the former successfully, the latter not so much).

Apple is also much more actively litigious and commits a lot of human rights violations in the production of its hardware.

On the other hand, Google has some really serious and insidious data collection/privacy stuff going on, as well as a general stranglehold on the internet--something that I see as a fundamental conflict of interest. Google is the de facto gatekeeper of the internet and also competes with businesses behind its own gates.

I picked Apple, but can see arguments for either one. I don't think Microsoft really compares to either, but would be interested in hearing about why I might be wrong in this regard.