The last player on the market, and the most relevant to this article is Nintendo."The last player on the market"?
In what crazy Bizarro-world do you "no live"? Seriously though, I get what you meant there, but your wording could easily be taken another way.
What really kept the Game Gear (I had one too) back, though, was less the battery consumption and weight than it was the fact that with the exception of Defenders of Oasis and Sonic(not a fan myself, but I acknowledge its popularity) there were no good games for it, a problem the Game Boy NEVER suffered from.