I can’t back this. It’s too unrealistic. Putting Dreamcast games up for sale on-line isn’t that simple. Sega controls its own assets, sure, but others? Not gonna happen. Plus you have licensing issues to consider, such as how Crazy Taxi’s original soundtrack and locations were removed from later releases of the game.
Likewise, what’s presented is a PC which reads Dreamcast games. That exists already, as I believe Linux can read GD-ROMs. Even then, emulators aren’t really viable yet from what I’ve seen. I doubt these guys can do what the larger community cannot.
I’m sure there’s a potential market for a Dreamcast with modern HDMI and upscaling support, but it’ll be confined to the retro enthusiast market which would likely prefer the original hardware anyway. There’s no real money to be made here, and I’d suspect the components (particularly the laser assembly) and work required would likely price it well beyond what anyone would be willing to pay. This will go the way of the Retro VGS and so many other failed attempts to tap into the market.