[MuGen]

To be quite honest, the only innovation was the first ever console.

Ever since then it's been improved graphics and gameplay.

I wouldn't say a respective brand is innovative at the least. However there are respective innovations worth noting.

Nintendo Touch Screen
Sony's EyeToy (more than just a webcam gimmick)
A lot of Pelican accessories.

Case and point.... Things have been innovative through out timelines upon timelines. But I would never go so far as to say one company has been innovative their whole time in the industry.