I work with WiFi all the time and let me tell you that after looking at usage graphs for what feels like forever, you don't need 1Gbps WiFi.
Most clients aren't averaging 50Mbps, nevermind 500-1000. What you want is consistent wifi. Something that doesn't show down because you dumped everything and the kitchen sink onto it. There's a lot of good ways to ensure this and nobody wants to pay for it.
Simply put, dumping 30-50 client devices, between cellphones, tablets, laptops, TVs, gaming consoles, IoT things (like smart lightbulbs, fridges, etc), and in more cases than I'd like to admit, desktops... Onto a single multifunction wireless router, with little more than dual band WiFi, is generally going to suck.
I usually hear a chorus of responses to this because people don't really put together that their smart watch, Alexa, smart smoke detectors and thermostats, all count as wifi devices. It usually doesn't make a huge difference how much each device is actually using the wifi, the fact that all of them are connected at the same time is, in and of itself, a problem with only a single access point where that contact can be made.... Dual band or not.
I don't consider mesh solutions to be solving the core issue since all of the client traffic needs to end up at a single device with all the same problems. The fact that they get filtered through what is essentially, fancy repeaters, isn't super relevant. The problem still exists. But if you suggest an infrastructure network with multiple wired access points, people generally take one look at the price, then leave and go buy the latest night hawk from Netgear at the nearest electronics store and put it out of their mind, since it's "good enough" (which it isn't, in the current WiFi climate).
I want people to have better wifi, but I can't save you all from yourselves. Now the IEEE is taking on the job, I suppose. Trying to "fix" wifi because most people can't be arsed to install a reasonable solution for what they actually need. They'd rather spend literally thousands of dollars a year on fast internet service that they don't need and can't use because it's all getting filtered through their sub $300 network that they've had (or will have) for two+ years, and then have the gall to complain that their wifi sucks, and they don't get it because they're paying $100+ a month for their fancy gigabit or multi-gigabit internet connection.
