Also 4G made decent YouTube streaming possible. It worked on 3G but was horrible. Now people can't do without it. We won't even know what 5G will bring us until it does.
2G: Slow WAP internet browsing 3G: Better internet browsing, maps, basic audio 4G: Stream video and better audio
5G:??
All the above were known beforehand because allowed for current apps which were on broadband to be used out of the house. I would be more convinced there would be everyday application if there was current technology that is on broadband that I can take remotely.
I actually think that there are a couple of solid examples of this:
* Console/PC videogames: people wanna play God of War on their bus ride, as evidenced by the massive success of the Switch and the growing excitement for the Steam Deck
* High-quality video calling: latency and bandwidth increases in 5G are both huge for the experience of FaceTime/Skype/Discord/etc.
* VR/AR: again, applications that are seriously harmed by both latency and bandwidth, and ones that have many concrete, business-value use cases in a mobile / non-living-room setting.
and my "dark horse" candidate:
* Machine learning applications: any "AI"-powered product or service has a quality that is pretty directly proportional to the amount of iterations it can perform. Self-driving cars have the capacity to gather gigabytes per second of environmental data; the ability to stream this data back to a central e.g. Tesla datacenter, rather than just doing procession onboard, confers a pretty serious increase to model quality.
I think a "local" network-free source of computing is unavoidable, and once it is available, I just don't see the point of setting up a complicated (and error-prone) infrastructure to make computations remotely when it is available and fall back on-the-fly when not. Given the amount of regulation this kind of things have to comply to, and how error-proof they must be, I wouldn't think anybody would be happy with this cascade approach...