There are reasons why people don't vote. Some people don't know about the voting. So, they don't have any reason to try.
Other people aren't allowed to vote, because they are not a part of the group that makes up the voting process.
Still others are too lazy, or have something more important to do (they think) when the polls are open.
But, those people who know about voting AND could vote, but don't, actually DO vote when they don't vote. By not voting, they are voting to do away with the voting and/or the whole system. Their vote is against the voting process if they don't vote. I mean, you can't vote and state that voting is wrong at the same time, except if the voting question is what is being voted on.
If 100% of the people didn't vote, what would happen to the system? It would dissolve, of course. It might be immediately replaced by something else. But it would dissolve regarding the form it had been in. The question is, what's the fewest non-voters that you would have to have to get the system to dissolve? 90% of the voters? 80%?