The politicians you vote for can regulate those companies, that is how the system is intended to work. If those politicians takes bribes to not regulate those companies, then the problem is corrupt politicians taking bribes, you don't fix that by giving those politicians more power you fix it by voting them out and voting in politicians who does what you want.

> Guess who is corrupting government

How are they corrupting the government? Is the private sector deciding who gets power in the government somehow? Sounds like your democracy doesn't work then. Giving all the power to politicians when the democracy doesn't work just leads to the same scenario as in Soviet.

Bribing the government isn't "corrupting" them, a politician who accepts bribes or tit for tat deals is already corrupt.