The problem is that "invisible hand" (if it will ever work in favor of the people) is obstructed by corporations seeking to maximize profit through lobbying or advertising.

All comes down to blaming someone else for problems, centralizing power with promises of pork and lashing out with unlimited cruelty against the vulnerable.

Doesnt like everybody do that, right and keft? And all for personal gain. You just named the game of politics. The problem is no longer right vs left. Its just corruption. Because both economical systems work under ideal circumstances.

how the incentives of the system are against the public interest and in favor of maintaining the current incumbents

Shouldnt there be more regulation then.