[citation][nom]Zenthar[/nom]Or at least drop the adapter's price to 50$ and/or offer Wireless N for 100$...[/citation]
Hmm, the one I bought for my son's machine was $30.
You also don't have to buy the MS branded adapter, there are other companies who make wireless network cards for the 360 (not hard since it's just a USB adapter). You can also use the wireless adapter from the original XBox, of which you can find brand new for less than $30.
Personally, I prefer to use a wired networking for my gaming needs. Less worries about lost packets, etc. Even if my Linksys WRT54G is widely respected for it's signal and overall reliability, I'd rather not take the chance.
Also, not sure why you think they should be offering wireless-N. In the first place, I'd bet you wouldn't notice a difference when gaming on a 360 or PS3 between G up through N. Nor does the PS3 even offer built-in N-support to begin with. For both machines you'd have to buy an expensive non-branded N-adapter. Streaming videos might make a small difference, but I doubt a difference large enough to notice.
I admit, I could be wrong on that last part... I just don't see the reason to spend that much money on a wireless network adapter for a console machine, especially when my internet connection is maxed out at 18Mbps and your average broadband connection is still around 1.5Mbps.