Yeah I don't think 50K is nearly enough to make a PC game these days.
I wish 4A would buy the STALKER licence or get some partnership going with them as this series really deserves another entry. Metro Last Lights' outdoor section were so good and atmospheric and I yearn for what a STALKER game could look like if they made one.
Some of the folks from GSC Gameword did go to work at 4A Games when they shut down. I agree though, combine Metro Last Light's game engine with Stalkers gameplay, and you would have an amazing game. When playing Metro Last Light maxed out with PhysX enabled, there we some scenes that made my jaw drop playing it. It's one the best looking PC games IMO, second to Crysis 3.