More of the pie is going to the smaller accounts?

I don't think that can be concluded based on these numbers. Cause this only shows what amount of SP these groups have. It doesn't say anything about how much each group earns. And I'm pretty sure that the whales, orcas and dolphins earn more then minnows and red fish.

The reason why they are losing power is that those rich Steemonians are powering down. What other reason can there be for the MVests decrease of the Orcas in May?