honest, when steam accept bitcoin, it does have a considerable influence on the price of bitcoin. but, I feel that it will make bitcoin getting famous. yah, steam including the largest game company, so when steam accept bitcoin, gamers will definitely try to find information about bitcoin
And gamers are a huge market , that spend a lot of money. So , we can expect large hardware and software retailers looking at bitcoin with much nicer expectations. maybe if we are lucky even some large payment processors may change their mind.
The only difference it may bring to bitcoin inst the price and yes to become more knowed currencie, since several people doesnt know bitcoin at all, and gamble world its very big, i believe its the second just after porn industry comes the game industry, soo be at those marketplaces does bring more exposion to bitcoin.