Personally, and I am just talking out of my behind here, but I wouldn't be surprised to see 5ghz N become the Laserdisc of the WiFi world.
You may be right, which is unfortunate because there are many, many people who could benefit from 5ghz that don't know it. I am constantly hearing my neighbors complain about how their wifi sucks, how there's too many people stepping on each other. When I tell them about A band and how it solved my issues, I can see their eyes glaze over.
Part of the problem is that much of the marketing for Dual band routers falsely claims it will increase your range. This is bull...it will help with interference...but it will do anything but increase range. Some also hype how the 2 channels can be combined to increase throughput. This is absurd...any 1 channel has more than enough bandwidth for anybody.
The years of industry lies regarding cordless phones has not helped either. First the industry said 900Mhz was the bomb. Next they said 2.4ghz rocks even more and will increase your range and make calls sound better. Then they said 5.8Gghz is really the holy grail. It was all crap. All you got from 5.8 Ghz was really bad range and battery life that would not get thru the day. Along comes Dect 6.0 which is really, really, really the best.
What is Dect 6.0?....it is 1.9GHz. All these games soured people (rightfully so) on claims of more GHz being better. I wish I still had my old 900Mhz phone...it would work down the block and the battery lasted for days.
Anyways...I digressed. Bottom line on 5Ghz wifi....the range is less but it can be a lifesaver for those of us in congested neighborhoods. It's too bad there is no longer an option for this in any of the new models. I guess if I ever decide to upgrade, I'll have to setup an A band bridge.