Independent of that, they're exercising a non-trivial chilling effect on startups at the earliest stages, so I hate 'em for that, and I am deeply suspicious of the class angle - these guys are sons of wealth, I can't imagine they've ever known serious privation in their lives, and they're trying to squeeze still more money from someone who, much as I dislike him, earned it by working his ass off.
If I were a Randian, I'd be the kind of Randian who believes that the wealthy are the real parasites, for exactly reasons like this.