Why should the idea of a lawnmower be patented? There are already enough protections for IP. Design patents, trademarks and copyright (to some degree). Giving

Why should the idea of a lawnmower be patented? There are already enough protections for IP. Design patents, trademarks and copyright (to some degree). Giving an inventor of something a monopoly on its creation should be extremely limited. Quite famously, the Wright Brothers original patent on the flight control mechanism successfully stifled any American company from making a plane, which became a real issue when the US entered World War One. The US quite famously had to buy planes from Europeans. This was such a huge problem that Congress passed laws to create a patent pool for aviation to stop this happening again. Patents are unnecessary and they stifle innovation in almost all cases.