> There's still Atari 2600s that are running after 20 years, why wouldn't that be
> possible with Dreamcasts?
>
> How long do you think the average Dreamcast will last?
>
Dreamcast and other cd/dvd-rom based systems stand as long as their drive can read the game's disc. Depending how often you play, it can fail after a couple of years and it's not always easy to replace them (if not impossible).