Action from the top means that we will have capitalists willingly going against their own short term interests. This is unlikely to happen; capitalists don't even look past the next quarterly earnings projections if they can help it.

Action from the bottom is also unlikely, since people at the bottom of the economic ladder can't take time off work to protest.

I don't see any other scenario that even comes close to saving us. At this point, I would say only God could help us, if I believed.