As long as power is centralized into a few politicians hands, there will always be a massive concerted effort to buy that power.
Everyone who champions for more state-intervention, this is the natural side-effect you'll have to live with. Welcome to your unintended creation. Transparency is the only possibly counter-balance I could see helping the situation, but I don't see any level of transparency being added to gov operations. The trend has been in quite the opposite direction.