Actually their has been new NES games still being made, just without Nintendo’s Blessing.
As as the hardware patents expired long ago, Nintendo can’t do diddly squat over new game development.
Actually your wrong about that, there is a bigger market for Upscalling NES games than what mainstream gaming wants to admit. The Scene is almost as big as the FGC scene (with a bit of overlap).
I would, but finding a CRT in my neck of the woods been at best really difficult.
Most CRT TVs are just thrown away, Pawn shop and thrift shops ever will not even accept donations of CRTs.
So that leaves searching for old Computer monitors, which means you still need RGB mods.