I think the voting power resets after a day or two. It is better that the rewards get spread about rather than just concentrated on a few.

Suppose the voting bots are designed to look at your blog posts, assess the average earnings and then compile a list of those with an average above a certain amount. They then automatically vote for any new posts people on the list make.

If the "usual suspects" are no longer getting the rewards and the new people are, then the lists start to change. In fact if the whales spread their love far and wide enough, it will become impossible for a bot to tell from the previous average, which will be the new high paying posts. The owners will be forced to log in and read - because if the rewards are genuinely going to those with great content you should be able to find this out only by reading...

And lo and behold Steemit's problems are solved!