1. They get their demands (not gonna happen)
2. They give up, because they found better things to do or cannot sustain living out there.
3. The city nicely asks them to leave, and the leaders announce peaceful compromise. They then said "we tried, our point was made", and go home.
4. City, state, military, whatever, uses force because they refuse to nicely leave.
Either way, they win nothing, whoever gets hurt is them, and Wall Street, government gets the last laugh.
Does anybody think Americans will sympathize with jobless people being hosed or tear gassed?