Parson christen him pickney first, a closed shop, the old boys’ club, patronage, nepotism. It is common knowledge and widely accepted that biases and prejudices exist and that people will, if left unchecked, naturally look after their own interests first. As a result, rules have been put in place, oversight bodies, policing mechanisms, and some form of democratisation (at least in the public sphere) which has meant that bodies of authority or power, in one form or another, are subject to rules and that the people who run these bodies do not look after themselves and their kin only but look after the whole.
Checks and balances can only be maintained if a body is accountable to someone. Your Member of Parliament selects the Prime Minister. If enough people wish to, then theoretically they could write their MPs demanding a change of the PM if, hypothetically, the PM enriched himself or herself and family.
The same goes for a company. At the Annual General Meeting shareholders discover the CEO enriching himself and family, they force him out and install someone else. The Catholic Church and Anglican Church, on the other hand, have no independent accountability and therefore corrupt actions, enrichment of family, and sexual crime go unpunished until and unless the scandal breaks through to the public eyes.
People, some well-meaning and others for selfish purposes, have pushed the notion that the State’s money and finances, that is the central bank of a State, can be above the political fray, that you can in essence have an independent central bank free from the whims of the finance minister and lousy citizens who would normally see the nation go broke. (This has been noted in the books Talking to my daughter about the economy by Yannis Varoufakis and Austerity – The history of a dangerous idea by Mark Blyth). This is an idea which, in theory, sounds brilliant: imagine a central bank which does not follow the fiscally unsound wishes of the minister, think of the trouble that can be saved.