Utility without retention is just pure velocity, which is akin to a hot potato being tossed around. Hive has on-chain governance, which means that people who are serious about building on the protocol will want to have a say in the future of where it goes or doesn't go.
If you buy something of value, do not sell it, and it can fluctuate in value, you are an investor by default. Every investor, big or small, has days where they do not want to curate.
Large accounts right now that auto vote is earning way more than they would under the new system (assuming we expand the curation window to suit manul curators, not Autobots.) So if you don't want the rich to get richer at an unfair advantage to those with smaller stakes, the system I explained above prevents this. Curators will always have a way to make more than people who don't vote in this system, because they are working and providing value to the system.
If you remove PoB all together, you'll see the rich get richer as you've never seen before on this chain.
makes sense