One difference between software and drugs is that the chemicals are fairly unique. If two people have the same chemical then one of them wins. That may not be fair, but at least it's over quickly. With software the claims are so vague no-one knows what's covered and what's not, which leads to the biggest, richest bullies winning based on nothing but legal threats and tiny little companies with nothing to lose acting like stick-up artists.

"Good fences make good neighbours", imagine property law if your claim was something like "the grass by the river with the nice trees" and it was in the middle of a bustling city with lots of businesses on adjacent land, rather than a precisely drawn plan.