May I ask where in the source you cite (https://www.blockchain4innovation.it/iot/blockchain-benefici-concreti-le-applicazioni-piu-promettenti-27-settori/) says that:

"Recent surveys among more than 200 banks and financial institutions showed very positive results: at least 55% of banks and 15% of financial institutions mean to develop their own Blockchain business within the next 3 years."

?