I'm still happy with Fallout graphics with high resolution paths.
GURPS game would have been worse, and it might even have been better, but to say the franchise 'died' is ludicrous.
GURPS have clearly shown purpose of Fallout - recreating the tabletop roleplaying experience on computer and gave it a strong backbone in form of a system that was tested and improved for over a decade.
The point of
Fallout: A GURPS Post Nuclear Adventure was recreating GURPS on computer as faithfully as it's possible.
And it wasn't even intended to be "Fallout series". It was intended to be the first of many GURPS cRPGs set in different settings.
After it was released, the clarity of the purpose was lost. It was widely known just as a cRPG with an interesting but half-baked (but still the best I've seen in a cRPG) S.P.E.C.I.A.L. system.
It would be impossible to do the "Fallout was intended to be RT FPP but there wasn't technology." thing if it still was a cRPG that faithfully recreates GURPS on computer.