Mastercard will allow US banks and millions of merchants to integrate crypto into their products
Mastercard users will be able to earn loyalty rewards based on digital assets.
markets.businessinsider.com
That will work only for some countries that have no banking etc. 2nd option is that they provide "chargeback" insurance while same time you don't have any insurance in crypto. In long term middle man will eliminated.MasterCard trying to stay relevant in future I guess . But lets be honest if crypto really takes of as a means of day to day payment then no one needs a middlemen like MasterCard etc.