Under capitalism, capital will always accumulate into the hands of the shareholders. Those with the capital will always find a way to influence politicians into deregulating, no matter how many anti-corruption measures you put in place. We've seen this happen over and over for as long as capitalism has existed.

We need a fundamental change in the system that prevents capital from accumulating. That change would be socialism, where the workers collectively own the means of production, rather than it being owned privately by the shareholders.