The question is, If the patent system didn't allow the inventor to screw with the market and take advantage of everybody would they have had the incentive in th

The question is, If the patent system didn't allow the inventor to screw with the market and take advantage of everybody would they have had the incentive in the first place to develop the technology? So yes the patent is responsible for the existence of the monopoly, but it is also responsible for the existence of the product that the monopoly is built upon. I think a 10 year limit on the monopoly is a good compromise (which is basically what the patent system is already doing). Even with those companies patenting DNA... after 10 years the argument is over.