Your second link gives a detailed explanation of what will happen when the operators kill off the copper system. It seems that by government regulation (?) we will have a guaranteed alternative chosen from a group of three options. Radio, satellite, or 4g mobile. Depending on financial means the government will offer subsidies to help with the increased cost of these alternatives.

This is reassuring.  I think the 4g alternative includes a special outdoor aerial feeding an internal box that can be hardwired to a PC.  Possibly by that time there will be another box to distribute the internet by wifi around the house.

I’d just like to have a mobile signal. As the walls are too thick we have
to go outside to get a mobile signal. This used to be ok but after fibre was set up in our village the mobile signal range decreased drastically. Now, I’m not complaining about the fibre installation as it’s made a huge difference to our lives. These days though many things, including banking, require a sms message with a code sent to our mobile phone. Often, by the time I’ve got a signal the code has expired.
To make matters worse we bought a new car where it’s heavily dependent on mobile wifi. To get updates etc we have to now find a town with a decent and importantly stable mobile signal.