Prior to Trump, we had the highest corporate tax rate in the industrialized world. DumBama and many other Presidents saddled them with more choking regulations than you can shake a stick at.
There is no corporate control of our government because corporations are too small of a vote to cater to. It's all in your head. If corporations have control of our government, they are doing a pretty lousy job at it.
For them, they are doing a bangup job. They get all the social benefits, their workers are on Welfare so they don't have to pay them enough to live on, they don't pay a single dime in taxes, the top levels have almost completely tax free lives and live like Kings and Queens. And when they want something, they have enough clout to send in their army of Lobbyists to purcha.....er...... convince the government to give them what they want. What you mean is, the Government is doing a lousy job for you and I and others like us. But they are doing a bang up job for the people that they actually work for. Hell, they don't even have to write the bills, the Corporations do that for them and the Legislators don't even bother to read them when they pass them.
You are under the naive idea that your vote actually means something. It doesn't. It's there to make you feel good. You don't get a choice except which old white hair old geezer gets the nod that's already been predetermined before hand. Your Representatives just go through the motions to make you feel good and so you won't wake up one day and figure out the scam.
Yes, we do have the power to change things by voting. But first we would have to come out of the friggin coma we are in as a group. It's a group coma sprinkled with magical dust. But, just remember, it's always the other side that's that way, never our side.