Isn't that the point?
The wholesale cost of rental and of calls has decreased. Justifying the annual huge increases at the retail level by citing the reduced number of calls made doesn't hold water.
It is the broadband usage that is costing the ISP's so much. In particular the cost of TV and sports rights in themselves, and the throughput capacity to support them. Broadband charges should cover them, not lines and calls.
There is no way those costs should be imposed on people who do not require those services, through exhorbitant rental and call charges. Many such are in fact poorer members of society who either don't have an internet connection, or have one and use it only to a small degree.
However, we digress away from the original topic. I think the mobile companies have to accept that the rental they agreed twenty years ago reflected the situation on mobile phones at the time. Agricultural costs have risen and income been squeezed hugely since then, alongside mobile companies' profits growing enormously.
They need to pay up, and we need either to pay up when they raise prices, vote with our wallets, or high volume mobile users need to cut their cloth. Farmers need to make a decent living, and we need them to survive. Maybe mobile companies will have to accept a small profit fall.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM