I highly doubt that. Even with MU-MIMO coming, wireless is pratically limited where wired is practically limitless. A basic wired NIC is less than a buck to include on a board, for a cheap PHY anyway. Its a lot more reliable than wireless, even super high speed.
Wired speeds will only increase with time. With the increase in the internet of everything, you have increase wireless usage, which adds contention and slurping up a limited medium. Onloading "everything" because no clients have wired connections anymore would make the situation infinitely worse.
As for wireless versus wired, once 1.7Gbps 4:4 APs become the standar high end, especially with MU-MIMO, I hope we see a move towards allowing link aggregation on routers. Right now the theoretical limit is around 60% payload versus link rate on a very good connection (the rest is eaten by beacon, preamble, error checking, etc). So a 1.7Gbps AP could possibly hit slightly north of 1Gbps...not including the 2.4GHz radios. Allowing any single client to exceed 1Gbps isn't a big deal, but as you have multiple clients and MU-MIMO the use case where you can exceed >1Gbps of total throughput from the router is substantially more likely.
Allowing LAG on a router seems like a trivial add in the firmware to me, and especially consider that for the time being, 4:4 MU-MIMO 11ac routers are going to be the high end, seems like it makes sense to me.