I frequently hear on the news about enforcement of patent infringements on physical products, such as various types of wrenches, machinery, and toys.
However, I cannot recall a situation where an online business has been sued for creating a product that is almost identical to another product. For example, in the case of video game app offerings for phones, whenever a new trend emerges, a multitude of copycat products seem to follow.
Initially, I thought this was because the rate of ripoffs is so high that the original creators are unable to file claims as quickly as new copies appear. However, I have also observed that large corporate groups, such as Ketchapp and Voodoo, often have entire portfolios consisting of slightly modified versions of popular products created by competitors.
It is difficult to understand how this is feasible, and copyright law for digital services seems to be less effective than for physical products. Please keep in mind, I am not from a legal background and am simply curious about this.