Again, and no hard feelings, but if you were a business-owner, would you prefer:
1) ripping out all of the wiring, just to get the next network "speed boost", or
2) take advantage of newer standards, that allow you to change out the switches and NICs, and get a 2.5x-5x boost in network "performance", without changing the wiring?
You seem to be under the impression that's the only two options.
3. Not bother because 1gbps is just fine. Option is to not spend any money at all, because 1gbps or wifi ac is plenty for almost everyone.
If those standards didn't exist, as you seem to want them not to exist, but if there were ONLY the choice between being stuck at 1Gbit/sec over Cat5e, versus having to completely rip+replace, even if the 10GbE-T gear was cheap(er), then there's still significant labor and cost for wiring upgrades.
Again, this wasn't even a thought until 8 years ago, a full 10 years after 10gbps was a standard. That was 20 years ago in 2002, only 3 years after 1gbps was standardized.
And I'm sorry, but wireless is never going to be more than a niche, utilized by "mobile" devices like laptops and phones. It will NEVER be a real replacement for wired networking, for fixed workstations and the like.
We can agree to disagree here. It's used extensively in the field, by millions of workstations right now, both laptops and desktops.
I'm not sure what world you live in, but laptops and phones are a huge piece of the tech market including in the Corp world. I literally repair laptops for mom+pop shops up thru big corps, they're hardly niche and neither is wifi, users are on wifi like crazy.
If ieee rolled out the standards 10 years ahead of when they did, I wouldn't being saying anything, but at this stage of the game, it's just a money grab.
The 10gbps market will remain inflated, as you even agreed with in post 41. You can pay to upgrade, twice, on your way there.
10gbps between the switch and nas will be great, but nothing else, even 4k video, will saturate the gig bus or even the wifi link to an end point.
Meanwhile, DC's are pushing 40 and 100 gig links now.
Edit: I should add, the most likely deployment of "multigigabit" that I can foresee enterprise-wise is to power wifi 802.11ax WAP's that are coming, since they would tx/rx enough data to saturate a 1gig link. Not a single user, but many on the AP will.