Probably be nearly ten years before the average house is using ten-gigabit Ethernet
The "average house" doesn't need one-gigabit
now ..... so I think your "nearly ten years" for 10g is a little optimistic.
More like "nearly ten years" for 1g is more like it....
(That's not to say I would not recommend CAT6 over CAT5e in terms of future proofing though)