Can we? My experience is the opposite, I live in Spain and fast transfers are definitely not free and not generally available in all banks. The regular case is transfers take about 24-48 hours to be settled between banks
I have been reading about instant transfers and I think the banks don't have to pay for individual transfers, they pay a fee for being part of the SEPA system. If that is correct, then every cent you bank charges you for an instant transfer goes directly to their pockets.