Financial interests push heavily towards PoS. Ten percent of all ETH is already deposited in the PoS network (currently running in parallel), and can't be withdrawn before the merge happens. The development teams were granted staked ETH by the EF, and can't withdraw it before the merge happens. All ETH holders are likely to benefit from the PoS merge, which will reduce issuance to the point where the ETH supply will begin to shrink because 90% of the fees are burned.