jbaldy22, Since Microsoft is still selling Windows 8, older versions of Windows couldn’t be copied under the theory that is no longer selling Windows 7 or Vista, since the current version is still on the market.
Also, can someone explain the halachic logic why Reb Moshe calls copying “gezel”? Does he mean that in the halachic sense that it falls under actual gezeila or is he using that term in a colloquial sense? If he means halachic gezeila, what is the halachic logic that copying constitutes gezel?