For Microsoft, X-box comes to mind as something they started after they were already huge, which was, eventually, a success. It took them a while to get it right though. Perhaps it's easier for big companies to do well with new hardware because it's harder for new, little companies to do hardware at all.
(I've never used an X-box; by "get it right" I mean "get popular.")
(I've never used an X-box; by "get it right" I mean "get popular.")