There are actually available switches from Cisco, providing 2,5 and 5 GB/s Ethernet speeds, but they are exactly result of marketing bullshit about 802.11ac -- in real life you don't need even second 1Gb/s port on AP, as traffic is never reaching 1Gb/s limit.
Ethernet is much faster and better than Wi-Fi at similar rates, as it is switched and full-duplex, and have about zero packet error rate.
If you have 100 users on 802.11ac AP, they all share same half-duplex bandwidth (which is much less than marketed "multigigabit" (866Mb/s or 1333 MB/s) in real life, and are contenting for media access. So you get average 5-10 MB/s per client if all users really use network, and even not full-duplex...
On 1GB/s Ethernet switch 100 users would have total full duplex 100x 1gb/s bandwidth without any contention, which is about 1000 times more.
So wehn you are saying that Wi-Fi is faster than Ethernet this is exactly what you compare. Doesn't look as good as just marketing pitch...
Marketing persons doesn't say this because they don't know or just don't care about facts - they are just selling.
It isn't a big problem to make 2,5Gb/s or 5 GB/s Ethernet chip any more, but you need also proper cabling, and it costs a bit more. When you need it -- you?l get it soon.
Fact is that most wired users never consume more than 100Mb/s still, so equipping everybody by 2,5GB/s adapters is just marketing, same way as it is now with 1GB/s. Most embedded "1GB/s" adpaters are cheap and unable to provide more than 200-300Mb/s speeds in fact, but it's OK, as nobody needs more, except for server applications.
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