You didn't take into account that some things are received better when they're rediscovered, however NEC still owns the patents and stuff, that's why they were able to license TG-16 stuff to Nintendo.
NEC and Hudson Entertainment are two entirely different entities, so what's your point? It's highly unlikely that H.E. holds the patents on the original hardware, not that it matters considering that patents are only good for 20 years and have likely expired (the software was protected by copyright law, which is effectual for far longer). Anyway, the V.C. has actually hurt the chances of more controller thingys, since people can just download the games they want and not screw around with one of those things.