Thus, the Pirate Party's proposal would give proprietary software developers the use of GPL-covered source code after 5 years, but it would not give free software developers the use of proprietary source code, not after 5 years or even 50 years. The Free World would get the bad, but not the good. The difference between source code and object code and the practice of using EULAs would give proprietary software an effective exception from the general rule of 5-year copyright — one that free software does not share.