People in power remain in power by keeping the population under control. If the population is indifferent to consequences of the power-class' decisions, then everything can keep rolling along as-is. When the population is impacted negatively by the power-class' decisions - then civil unrest happens. With enough of that, the power-class loses power...

This[1] video does a decent job of highlighting the careful balancing act that's required to remain in power... it also highlights the difficulties of changing the status-quo even for a benevolent dictator that desires to remain a dictator - ie. they have to appease all of the powers-that-be under them.

[1] https://www.youtube.com/watch?v=rStL7niR7gs