The fundamental problem is the centralization of what should be distributed computation and decision making. The federal government busies itself with making rules that prohibit and distort voluntary exchanges between individuals and businesses. Many of the rules it considers or enacts in a fit of piqué or in response to the latest headline pose existential threats to businesses.
To survive, businesses have to lobby. The money is also nothing comparatively. Obama and co spent around 787 billion, just on the stimulus. That sort of money flying through the air can destroy you directly or flow into the pockets of your competitors. So against your better judgment and with a heavy heart you lobby. You would much rather that Washington geld itself so that you can get back to growing your business.