Consumers/the free market told Adobe to fuck off, but Adobe ignored them and forced their way in by buying the competition. This is something they've consistently done throughout their history, and it doesn't seem like there's anything consumers can do about it.
FreeHand is probably the most high profile, if not well known nowadays, since it led to a lawsuit brought by pissed off ex-FreeHand customers (which ultimately ended in a shitty settlement).
/end-lossely-related-rant