@TheEjj @stroughtonsmith I suspect it was just easier to ship with the OG resolution, which was tested/verified when it was released. The code for enabling 4k was probably simple, but testing/supporting it would've cost $$.
Hopefully someone more knowledgable about the game biz will weigh in, though!
@TheEjj @stroughtonsmith Depends on how simple the feature was to implement in the first place.
But I'm guessing since the patches have been out within a day of release, it's just as likely the resolution *could* have been scaled - the developers simply chose not to for... raisins iunno.
The only reason I could think of is artifacts (visual glitches or whatnot) as a result of forcing the resolution scaler up--and MGS2 apparently has some HUD bugs with this patch.