Metro 2033 and Metro: Last Light are being re-released on PlayStation 4, Xbox One and PC later this year, and while owners of the original titles on Steam are getting a 50% discount on the upgrade, some members of Valve's community are angry that they're not going to get the improved versions for absolutely nothing. The developers, 4A Games, have taken some time to explain just why that is, and it goes far beyond the "don't be greedy" that it could have been.