Actually, I think the US is the best market of them all.
Merely because we're vastly more accepting of each console vs. Japan and Europe.
Look at it this way:
In the NES days, Japan sold well, as did the US, while we still enjoyed the Atari and PC.
In the SNES days, Japan totally murdered the Genesis, Europe embraced it, and we bought both very, very well.
In the N64 days, Japan abandoned the N64, bought more Saturns, and sold uber-units of the PS1. Europe was the same way. Whereas in the US, we gave the N64 a great chance, it sold well, and so did the PS1. The Saturn didn't do too well.
In the GC days, Japan didn't notice the Xbox, or the GC, and kept selling PS2s. Europe adopted the Xbox a bit, continued the Ninty hate, and kept the PS2. The US loved them all, and sold tons of GCs and Xboxes, and a great bit of PS2s.
So I fail to see why the US is so bad. Good systems do well here. Despite absolute abysmal numbers in Japan and Europe for the last 10 years, the US kept Nintendo consoles afloat. Had the US gone the way of Japan and Europe, there would not be a Wii.
Back from the dead, I'm afraid.
