Landline? What is that? Oh.. I remember..
...It was that thing we had before mobile phones.
In Finland you do not need to have a phone service to get ADSL, they are completely separate. I have not had phone service on the line since I switched from ISDN to ADSL for my internet connection around the turn of the century.
Though the minimum price of broadband has gone up lately as you used to get slow ADSL at <20 eur/month, but all providers have removed them and starting speed are 10m at 27-30 eur/month..
The lower competition from the consolidation of the market is certainly clear..