Thank you for writing this. I've had similar concerns for some time related to the sustainability of the prices and, more importantly, the impact of the Steem Power Interest rate on the whale balances. I just ran some numbers this morning, and it looks like @ned is making $700k+ a week via interest. Is that sustainable? I'd love for you to add your critiques and comments here: https://steemit.com/economics/@lukestokes/ned-s-making-usd700k-every-week-is-the-steem-power-interest-rate-too-high