Maybe it'd be better if we stopped using abstract words, like "capitalism" or even "democracy" (bc it tends to be associated with a lot more than just voting, e.g. like democracy somehow means open, freer society). Using violence to shape society is wrong, no matter what the supposed intentions and utopian promises that come with it. So no, it's not "capitalism" (private ownership of resources and hence free trade and association) that's "eating" democracy, it's politicians convincing people to give them increasing power to use violence to shape society.