Laws should never be used to extract wealth. Whatever the government invests effort it, it specializes in that over time and it entrenches itself. Laws and government should only exist to even the playing field of the market, allowing small businesses to rise faster.
This would be just as bad for the rich since their businesses would have more competition. The big difference is that tax goes through government, allowing politicians to have a huge incentive that benefits them, whether it's through legal means or not.