I'm not that young, I'm 34 years old and in 3 months time I will become 35!
I've gone through my first Dial-Up since 1998 when I was 9 years old. I remember the old days when I started playing chess online on MSN Gaming Zone and my dad told me, "I'm now going to pick up the phone to call a friend, quickly finish your game" as the internet will disconnect!
Those days are still in my memories. Chess, Checkers, Reversi, Backgammon, Spades, Hearts, etc were the first games I played online on Dial-Up internet. It was with Barclays pay as you go service provider a CD-ROM installation with a Sagem F@st modem. Then Diablo 2 was the first PC game in the early 2000 that I'd play online.
Then I remember the days of ADSL when we switched to Tiscali in 2003 and it was like 128Kbps and in 2004 it was 1Mbps. The landline phone was still a problem causing issues with drop-outs but the internet was still usable while making phone calls unlike on Dial-Up where the internet would not work.
Eventually my dad bought a Nokia 3210 and even I had a Nokia 3330 in 2004 at 15 years of age using O2 pay as you go back then.
This is when things changed. All my dad's friends also bought mobile phones and gave their new mobile phone number and pretty much abandoned the old landline. There came a point when no one was interested to give their landline number any more.
There was a time when only for a few seconds a friend will call via mobile and say to login to Skype as Skype calls are free.
My dad is a Medical Doctor and I do remember locum agencies calling him on landline and sending emails about various job offers around the UK. He would work in different hospitals in the UK for a few weeks/months contract. Eventually he gave his mobile number. The same thing happened with our local GP, dentist, etc.
There was no longer a compelling case to have to give our landline phone number anywhere as friends didn't either. Calling 1471 regularly resulted in no missed calls from anyone other than some spammers.
Multiple times we have changed our landline number. In 2020 after maybe 10 years we finally changed number as part of our FTTC upgrade with TalkTalk and since I no longer had spam calls with this new phone number I safely migrated to BT FTTC using Digital Voice in July 2022. BT did port the number to the new DV service successfully. But porting the number was mostly a case of switching provider smoothly otherwise we didn't really care about the number.
We've only experimentally used the service to call each other with the new dect phone to test what the service is like. Digital Voice is definitely better from our test compared to the old analogue service, much clearer sound quality and the line has zero crackles.
But nevertheless none of us have really used landline to call anyone these past 15-20 years or so and with the new DV service, I'm not sure how much special attraction it will bring to the customers. 1% doesn't seem like a very big deal of users. I'd be curious to know how many of these young techy users prefer to use a 3rd party VOIP provider by default compared to a mobile sim deal.