Also, it's about relative cost... what about data caps? If they intend to compete with wired in home connections for things like set top (online streaming), they'll need a compelling story, and not running out of your allotment or being throttled after watching a couple 4K movies in the evening less than a week into your billing cycle.
Due to higher frequency, 5G might actually have a disadvantage in range for a single tower, in dense urban environment due to weaker penetration. But it could be compensated by deploying more towers, at more strategic locations. The value proposition is that the gain in speed and delay would be well worth it.
Weak penetration is still a problem for long range open field 5G communication, but due to different factors like fog, weather conditions, etc.
Regarding data caps, I view it as more of a business model question, less related to the technical capabilities of 4G vs 5G.
Also, this article is correct that there is no similar difference in "5G." There is really no such thing, outside of carrier marketing, as "5G." One could try retrofitting meaning to "5G," like "OK now we'll really do packet switched phone calls" or something like that. But almost all the technologies that come under the heading 5G were foreseen and often standardized when LTE standards were first written.
LTE stands for Long Term Evolution. It's meant to be a durable, evolving set of standards for wireless communication.
Wouldn't have been much of a thought out framework for "long-term evolution" if it was scrapped within 10 years!