>This is entirely a problem of our own making. >We give cellular providers hundreds of MHz of exclusive spectrum access, and then deprecate and auction off the old analog TV channels to give them hundreds more, but we expect everybody else to shove all of their traffic into a 100 MHz block at 2.4 GHz.

I don't think this is a bandwidth issue. USB is a wired standard. Using shielding is not that hard, but doing it inexpensively, while maintaining cable flexibility and low attenuation at high frequencies is very hard.

I wonder how do manufacturers of those devices manage to not get caught by the fcc in us and equivalent agencies in EU. Perhaps they sell directly to customers overseas?