Surely cost matters
As a retired programmer here in Spain I pay the exorbitant cost because I am so used to Internet access that I miss it if I do not have it. But 44 Euro pm for standard 6 Mb/s or 44 for 10Mb/s plus VAT is rather costly compared with the UK. At the higher speed you do get national calls included. Of course there is a 23 Euro line rental pm plus tax as well. :-)
Compared to my Sister in the UK who gets all calls under 1 hour included for about £9 pm including line rental and a 10 MB/s service, cost must influence a lot of people at least here in Spain.