Earlier quoted context omitted.
A pirated copy doesn’t need to equate to a lost sale in order for it to be stealing. You took something of value that was created or owned by someone else. Whether it’s a physical or nonphysical good is completely beside the point.
Look it's not stealing - stealing is a concept related to physical goods. That doesn't mean that it is right. Piracy is still wrong even though it is not stealing. And the GP seems morally confused. Sharing FLOSS software is very very different morally to pirating games.
Why would one want to take away the opium from the masses?