Both of those were true for DOOM, but Id did it anyway. It did take 4 years for the initial source release and an additional 2 more for GPL though. It is worth

Both of those were true for DOOM, but Id did it anyway. It did take 4 years for the initial source release and an additional 2 more for GPL though. It is worth noting that DOOM is still selling today. Not that I'm saying any developer should feel compelled to do it.