I've seen your other posts on the subject and I strongly disagree with your suggestion.
I've just read a post from you where you admit to using 110GB of data within 14 days.
I too have "no broadband", I haven't for many years now, and I don't hunt for or use free WiFi either, yet I am and have never been anywhere near your usage levels.
I'm not shy about using data either, I've streamed multiple live sports events this month, about a dozen movies, each week I download about six hours worth of TV programs, I so all my app and operating system upgrades, I'm using VoIP for multiple hours a day, and I'm a heavy Spotify and internet radio user as well, many hours per day.
I asked you the other day how you were using so much data but you ignored me so I'm gonna speculate...
You're either attempting to feed a whole family's data needs via a single personal mobile connection, which is ridiculous and almost certainly a breach of the terms and conditions of use because personal is singular, (it's your connection for your use not your whole family's connection for general use). Or you're blatantly extracting the urine and making absolutely zero effort to moderate your usage based on your current circumstances, choosing instead to try and use your connection as an unlimited one and then complaining when you find out that it's not unlimited after all, (something specified in the terms and conditions).
I'm all for data infrastructure and data packages increasing but I also believe in being realistic.
You claim that Three is totally unrestricted usage for £27/mo but it's not. First there is a traffic management system in place which restricts and prioritizes certain types of network activity, some all day every day, others at different times of the day. Second their network is further affected by heavy congestion in many areas, which further limits their customers connectivity and usage. If you'd purchased their £35/mo "all you can eat" PAYG data bundle, (note again, not unlimited - as well as the above there is a fair usage policy), you'd see just how restrictive it can be at times.
Do you know what the market rate is for the unrestricted data on PAYG you clearly want given your false claims about Three? £1.5/GB meaning those 110GB you've used would cost you £165 so far.
Even on a personal contract the price is £0.60/GB putting your current usage at £66, but you'd actually need to pay a minimum of £80), and the cost of the contract over time would obviously be significantly more.
Are you willing to pay £1.50 per gigabyte?
Are you willing to even pay £0.60 per gigabyte?
Look, I broadly agree with what you're trying to do my friend, mobile connectivity should be full coverage, full speeds and cheap but look around the market, we are NOWWHERE NEAR that stage yet, the infrastructure as well as the mentality of companies and customers both, need to change and improve.
You're trying to go direct from Lands End to John O'Groats totally ignoring that even if you fly there are still many marker points along the way, unless you pay a lot of money and hire a helicopter or light aircraft and crew to take you direct from point A to point B.
As far as mobile data is concerned, you can do the same, you can get what you want IF you're willing to pay for it, but otherwise you gotta talk the slower and less direct route like everyone else not willing to pay.
Your usage, you should have had a word with EE and picked up one of their home broadband sims for a month, (if available for that short a period), which would be the equivalent of driving to Exeter airport and taking a commercial flight to Aberdeen with a taxi both ends and it wouldn't have been unrestricted, but it would have been a lot more suitable for your needs, particularly if you're feeding a whole family's data needs.