That's how virtually all competition is formed in all markets. You wouldn't have "competitors" if they didn't have to at least make a somewhat similar product.

That's how virtually all competition is formed in all markets. You wouldn't have "competitors" if they didn't have to at least make a somewhat similar product. If it would be a completely 100% different product, then it wouldn't be a competitor in that market anymore. It would be something else, in its own market...which would also get "similar" competition there. Patent enforcement is way out of line with how businesses actually work and have worked for millenias.