For all old folks like me, we all remember how SEGA was doing great console and most of the time they were way more innovative and above the competition.  Here is what I`ve found and it confirms that sometimes, Sega was well before their time.

The SAGE channel was an online delivery content available through a coaxial cable from 1994 to 1998. “Sega Channel has been praised for its innovations in downloadable content and impact on online services for video games” -source Wikipedia