On PoS networks, if a top staking pool goes down, there is no safe fail backup that auto pickups the slack. Meaning staking pools are much more vulnerable targets without the ability to play whack a mole with their attackers. Too much trust is reliant on top staking pools without an adequate plan B if they were overtaken.
Hive has a huge built-in advantage here. Few may see it now, but when at some point one of the major PoS networks is shown to be vulnerable, that could quickly change.