Given that many computers can't keep up with regular Gigabit Ethernet speeds (100MB/second approx.), I don't see 10-Gig (1GB/second approx.) anytime soon. Even fast SSDs can't keep up with that.
I guess if your business needs that kind of speed, sure. However, Gigabit Ethernet (roughly 100MB/second) is plenty fast for most *consumers*. Transfer a 9GB MKV in around 90 seconds.With single SSDs approaching 6Gbps, there's certainly scope for 10GbE.
I believe very few people benefit from even gigabit in their homes. The average user isn't streaming or moving vast quantities of data on the local network; they are surfing the internet and 802.11n is generally faster than the Internet connection.
And considering how quickly we went from 10-120Mbps; I wonder how much longer before broadband gets faster again?
It is taking a long time to reach comsumers because it is totally unncessary for 99.99% percent of us. For most home users, wired networks are going the way of the wired telephone - extinct. If you really need speed, gigabit ethernet/wireless is more than fast enough to transfer multiple GB files quickly. I will be thrilled when my next home laptop has no ethernet port (and VGA port too for that matter).
If you need more speed than a gigabit, you are not in the "consumer" market segment anymore.