Voter apathy benefits the powerful.
First you instil fear in the people.
Then you demoralise them.
Then you have control of them.
The few oligarchs who own and control the big media will always propagandise in their favour and present it to the public as a fait accompli.
Demonise dissent and marginalise challengers to the status quo.
Paint dissent as the "enemy".
People will retreat to their fears and squalor to protect themselves.
People vote Tory, Labour, Brexit, Green, UKip - but none of them is a threat to the status quo.
Those who vote Conservative arent "scum" but many are fearful and believe the propaganda - becuase they dont know what is propaganda.
Better the devil you know......
The powerful benefit from keeping the public misinformed and disinformed.