> Do you also believe I should be entitled to a cut of your paycheck?
I don't necessarily agree with GP or you, but this isn't a good argument because anyone other than libertarians (i.e. anyone who supports taxation), which in practice is pretty much everyone, does believe that.
No I agree it’s a poor argument when looked at either extreme. I think most folks would likely agree that some taxation is beneficial, albeit not a 100% tax rate, which would be broadly analogous to the argument that copyright shouldn’t exist.
The person you replied to wasn't making the argument that copyright shouldn't exist. Their argument is in line with "some taxation" where it goes into the public domain after a while, and they only (potentially) called extended copyright terms stealing from the public domain.
I don't necessarily agree with GP or you, but this isn't a good argument because anyone other than libertarians (i.e. anyone who supports taxation), which in practice is pretty much everyone, does believe that.