2.5 and 5 GB/s networking equipment? Where is? what happened?

Hello all,

It's been several years since the announcement of 2.5 GB/s and 5 GB/s ethernet that was promised to run over regular old CAT 5e and CAT 6 cables - basically upgrade your existing network without changing the cables. I know not everyone was super excited about this smallish speed bump when 10 GB was already available and not super expensive anymore, however there are folks like me where rerunning cables is downright impossible.

What happen to this technology path, can it be found anywhere I check out amazon and newegg, and stopped there assuming that if its not on a consume site the price is not reasonable.

Thoughts, suggestions, ideas?

Thanks so much for your time and comments!

Edit: I did fine one NBASE-T switch on Amazon https://www.amazon.com/TRENDnet-EdgeSmart-10GBASE-T-Protection-TEG-7080ES/dp/B07BV2VYVF/ref=sr_1_2?dchild=1&keywords=NBASE-T+switch&qid=1589470013&sr=8-2

Price seems pretty high though IMHO