Kinda inverts inverted the causality of Netflix starting their own production and other companies pulling their licences. Netflix started their own production to survive the licences getting pulled, which was inevitable as soon as Netflix looked profitable.
They didn't get greedy, they probably started out greedy, ran a good service to grab market share, then had to make moves to defend against the predictable greed of the incumbents.
It's greedy turtles all the way down