I have a brilliant idea. Let's bring manufacturing back to America, but let's exclusively build "vintage" technology.

Yes.

https://www.thomaselectronics.com/

But they're only building them for specialty niche military and industrial applications (e.g., replacement parts for old fighter jet HUDs). You could ask them about building one for your SNES setup or old arcade machine, but it'll cost you call-for-pricing dollars (tens or hundreds of thousands, perhaps?)