Nice analysis. That rising trendline is a little frightening.

Personally, I think bidbots are antithetical to the core premise of Steemit.
Those with Steem Power should be curating, not selling that steem-power to give people the right to self-curate. This is how junk content not only proliferates, but thrives on Steemit. And this is how lazy whales decide to recoup their early investment in steem by no longer contributing directly to the health of the community.

At the end of the day, I think there is only one thing Steemit can do: