how is this different/better for corporations than for politicians? Also how do corporations, that focus their efforts on using the cheapest possible production

how is this different/better for corporations than for politicians? Also how do corporations, that focus their efforts on using the cheapest possible production methods regardless of effects on the environments or peoples' health, paying their workers the absolute minimum for them to continue living, and paying their shareholders the absolute maximum amount 'enrich others' by accident? Not that I am defending corrupt politicians, I just really don't know what to do about this, and looking at all the bad things corporations do i can't comprehend how they would suddenly become good when even less regulated than they already are