So is the U.S. really even a mixed economy? Every channel to make money is locked down by regulations. Why compete if you can create legislation to block compet

So is the U.S. really even a mixed economy? Every channel to make money is locked down by regulations. Why compete if you can create legislation to block competition? Just throw up a wall of insurance liabilities, financial and property requirements, and enough minutiae to sap the energy of any potential competitors. Meanwhile if you are on the fortunate side of all this what incentive is there to innovate or even stay modern? It seems like a recipe for disaster.