This is what I keep coming back to: we suddenly have new options to decrease rETH commission, but we are forgoing these in order to keep RPL collateral at 70% of ETH stake. So we’ll get thousands of new minipools spun up by people who already own RPL, but no increase in demand for rETH.
What some might call a race to the bottom, I call legitimate competition- we currently have first mover advantage, but we can’t assume we’ll have a monopoly on decentralized staking forever, and it’s going to be hard to bring down rETH commission with 20,000 minipools guaranteed a lifetime 15% commission.