The reasons we suffer these accountability challenges are often rooted in that anyone holding someone else accountable, may experience negative consequences to self...and those are often estimated as too high to do "the right thing".

If the governing part at the time of the Nazi trials actually held each and every person involved accountable, would they win the next election?

If a company holds their employees to the actual standards laid out by their policies or guidelines, what would attrition look like? Would they immediately be short staffed critial roles? Would they loose a key employee at a very inconventient time?

These are the real reasons preventing us from holding people accountable.