Power is a big differentiation. You need to send 10GbE over 100m (some break the standard and only offer 30). Have you ever touched a 10GbE SFP module or the heat sink of a card? They're quite hot and you need to provide that energy, which is not a problem on a desktop, but a big one on a laptop. If the laptop has RJ45, that is.
> modem/router/ap/nas manufacturers don't want to move until computer manufacturers move
Modems and routers only make sense once they serve a link that is actually beyond 1Gbit - which is rare even today. Also, these devices are minimal and the hardware required to actually route 10Gbit is a lot more expensive. Even Mikrotiks cheaper offerings today can't do so with many routes or a lot of small packages (no offense to them, their stuff is great and I'm a happy customer - it's still true, though).
APs are a bit different, as WiFi recently "breached" the Gbit wall (under perfect conditions). But there are already quite a few with 2.5Gbit ports to actually use that.
NAS, on the other hand, are a bit held back by the market. Still, high-models have offered either 10Gbit directly or a PCIe-slot for a long time now.
> People are recording and editing video more than ever, taking more pictures than ever, streaming more than ever, downloading hard-drive busting games more than ever, and so on. LAN appliances would have eaten a much healthier chunk of this pie if LAN didn't suck so hard, but it does, so here we are.
The professional video editing studios with shared server are already on 10 Gbit LAN, the stuff has been available for years. Pretty cheap even, if you buy used SFP+ cards. Switching was expensive until recently, but I'd say that the number of people which need a 10G link to a lot of computers are even less.
And LAN competes with flaky, data-limited, expensive 100 MBit lines (if you're lucky). 1GbE is beyond awesome compared to that and yet it lost, anyway.
> Yaay, PCIe 2.0 speeds. 2003 called, it wants its transceivers back :P
I'm not happy, either, but its better to at least go beyond Gigabit speed rather than stay stagnant even longer.