You're both making the same assumption, which is that the 99% all have the exact same ideas what the solution should be. I've heard a lot of ideas thrown about by the OWS protestors, some good ideas, some horrible ideas. Some clearly don't understand the causes of the problem, and others do.
One possibility is that a subset of the protestors (or maybe multiple subsets) will come up with what they view as viable solutions. Or maybe a significant number of them will back the political party that they feel is most likely to come up with a solution and may affect voting for certain candidates in a similar way that the Tea Party did. Or maybe one party will simply start campaigning on solutions and will attract enough of the 99% to win elections.
Sure, but it's not necessarily their job. That's what politicians get paid to do. It can be argued that the politicians haven't done a good job, given the state of things. In that case, pointing out the state of things (as you put it, "being contrary") might just be the best thing to affect change. Time will tell.
-Bri