Offtopic.. But I'm not so sure about this.

I used to work on downloadable desktop apps, and we always played to the lowest common denominator. It ended up being a big weight around our neck when we wanted to do something 'cooler' but a little more resource intensive. I think we supported Windows 95 even after Microsoft stopped... simply because so many end users were still running it.

Another example: We have a "lesser" brand of mobile phone now, and I notice angry birds is frustrating to play on it... Even though it's perfectly acceptable on an old 8Gb iPod touch I had. Sure, they could spend a lot of resources on it to make it better, but that's likely to be a poor usage of resources.

You definitely need to hit the sweet spot of the performance bell curve, though.