OWS failed to get a seat as a reward for their protests because they had no one to give a seat to.

Otherwise, a protest at that scale generally results in political power of some form being ceded — but how can you do that for a disunified, leaderless movement?

That’s ultimately what brought them down as well: they took on every issue, so accomplished nothing — and eventually fell to infighting as people who wanted to advance racial and gender issues disrupted the movement by seeding conflict between members.