I'll stop bringing it up when people stop saying that piracy is the same as car theft. Otherwise why not go all the way and say piracy is genocide.
It is materially different from theft. Enough so that making property law fit copyright is not feasible in any reasonable way.
One is based on an presumptive right of the individual to protection of their right to continued use of something.
The other is an artificial government monopoly restricting the public from exercising their right to full use of their own property, by preventing them from copying and distributing information that is legally already in their possession, and where nobody are deprived of continued use at all.