[greenonions]

It most certainly is illegal, but can you find a definitive example of such behavior?

It's theoretically a highly illegal and unethical thing to do, but in reality, monopoly control of a market is highly unlikely.

[maxsilver]

I mean, one textbook example of that behaviour is late-90's-Microsoft --- https://en.wikipedia.org/wiki/United_States_v._Microsoft_Cor....

Amazon's behaviour today is another example of it, but since we haven't really enforced any anti-trust laws in the past decade, it would be easy for someone to claim Amazon "doesn't count".