A video game crash is definetely a possiblity. But I highly doubt it will be as large as the crash of '84(4million copies of E.T. are still buried in the desert). The problem with games now are that people expect more, and they in turn recieve more, and then the next time around they want more, and in turn they recieve more. To compensate for this development teams have to be larger and more money has to be pumped in to develop the games, and in order to make your money back you have to have a massive marketing campaign or else you've just wasted millions of dollars on developing a game, whether it's crap or not noone will buy it unless they know about it. Unless your lucky and it becomes a cult game, but that's highly unlikely and even if it does you probably wouldn't make your money back.
And since you have to spend soooo much money to make a game you best believe companies are going to go with sure thing titles and clones and anything else that has a proven track record. If you were a big company would you risk millions of dollars on a new concept game that may sell, but may not. Or a tried and true formula game that may not sell well but at least has a better chance since that series(or genre) already has a built in consumer base?
I think there is a possibility we may see an arcade comeback, arcade games are cheap to produce, and if a company doesn't have to fork out millions of dollars for a game they may just give the developers some reign to be creative with their software(as can be seen with some of SEGA's wacky jap arcade games). And if put on cheap hardware(Atomiswave anyone?) can be sold to vendors at low prices and therefore be available to play at cheap prices. The reason arcade games became unpopular, at least in western markets, was because of insane cabinet prices ($10,000-$20,000 for a brand new cabinet) and the insance cost to play anything more than a few years old(a buck a pop, gimme a break). Since the Sammy merger SEGA has been more focused on arcade games than anything else, and even though that peeves some of you off something horrible it's an excellent business move and so far it has paid off extremely well. And if they can manage to do what they are attempting to do(bring cheap arcades back all over the world, even the middle east) they may be onto something special.
And as far as translating this into home market profits, the arcade games could be ported and sold as package deals(it's a lot cheaper to port a game), ie putting the entire real life series of arcade games(the one that spawned Crazy Taxi) onto a single game(they all used the same engine so it would've been easy peasy). You could scrap a lot of special features that way simply because so much content would already be available.
Anyways, I need to stop writing, if you have actually read this far I commend you.
:banana