The legitimacy of the company that produced Mario, etc. will rub off onto a new generation of kids and make them feel like they are really playing with the big boys.
I don't know how to explain this right. I know that I myself still get this feeling when I see something I wrote running on an actual Atari Jaguar because I was such a fan of that console when I was a kid. It's like, "wow, I'm actually a real developer! I made it!"
I start thinking about all the things I can do and all of the possibilities that are more than just firing pixels on a screen.
It's a form of technological empowerment, and it's something that makes a huge difference in a kid's life. I know it did for me when I first discovered BASIC on the Commodore.