In my opinion, which does not count for much, whatever advantage Microsoft now has in computer gaming will not last long. Large successful game companies have got it figured out how to port their software over to whatever OS is currently popular with the people. There are quite a few net books out there and there is the Apple iPad coming on strong.
I'm pretty sure that TMJ is refering to "hardcore" games- like, for example, the Call of duty game Carbon has noted, or Fallout 3, Crysis etc. games of that nature that require rather powerful machines.
Now, that isn't to say that a Mac with enough power can not be had, but I highly doubt the iPad will be powerful enough to run them. Besides, a large selection of games can probably be found in the Apple store for the Itouch/iphone (and I imagine iPad, as well as the upcoming iMat and iFloor).
Also, it's interesting to note that some of the "higher" games, like Fallout 3, have versions for completely different architectures (such as PS3) so it's probable that it would be a relatively simple task for them to create a version for Linux or Mac OS.
(Funny thing just happened, I tried to pronounce the name of the new Apple product and guess what it put, the speech interpreter typed "Apple hype pad.")
lol
Up to now, a personal computer is either a desktop or laptop. But the point where the distinction between these types of devices and handhold devices is no longer clear. The new personal computers are going to be handhold devices or pocket-sized devices or something you can slip in your backpack or your fanny pouch.
laptop PCs have always been several years behind in terms of power and gaming capabilities, and they will always be both more expensive and harder to upgrade then equivalent desktops, which means that desktops, regardless of the OS, will be the premier choice for gaming.
Unless Microsoft comes up with a really original idea very soon, their market share is going to become smaller.
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