Why is consumer Ethernet stuck at 1 Gigabit?
Why are 10 Gigabit Ethernet adapters and switches still so goddamn expensive?
Because the vast majority of consumers don't need anything faster than gigabit and even those that have gigabit hardly ever actually use gigabit speeds or even have gigabit internet connections.
Too many different types of interconnects.
1GigE standardized on Cat5e and Cat6, with RJ45 connectors.
10GigE isn't standardized at all, and most of the interconnects are prohibitively expensive over long distances.
It's basically standardized on Cat6/7 RJ45 for cheap hardware. Higher end hardware has standardized on SFP+ with DACs for short range (1-3m), copper and multi-mode fiber for medium range (3-30m), and single-mode fiber for long-ass hauls up to 40km.
Well one because most consumer networks aren't even using a full 1gbps at the moment, and further the NBASE-T standard is currently being looked at to extend the life of current CAT5e cable to 2.5gbps without a need to upgrade infrastructure.
Yeah, and it's still gonna be at least five years or so until that shit is cheap enough for mass deployment outside of high-grade datacenter usage.
Allow me to alter my original declaration:
10GigE is shitty and expensive at this point in time, but that will eventually change.
It actually happens more often then you think, torrents not as quickly unless multiple ones but steam will hit the 500mbit easily, and we mostly use Usenet to download our entertainment and that easily saturates the line as well.