However, this does not mean that eurocrats or politicians would manage FIRE better, nor that non-FIRE enterprises which in general seem well managed, need any more political meddling what so ever. It means the FIRE sector requires better regulation.

In my experience working for US, British, German, and Swiss companies there's as much Own Goal "political meddling" within and between companies as there is from the government.  Brass tacks: whether the entity is Public or Private it is run by people and people "do" politics.  An 'Empire Builder,' whether in government or IBM WILL attempt to build an Empire; a person motivated by the Common Good will work towards that.

Ever since I learnt about confirmation bias I've started seeing it everywhere