The future of credit/debit cards of cryptos will come from the cryptos itself. We can't expect VISA and MASTERCARD to fully support bitcoin and other cryptocoins. I am willing to use some card as a payment method to use my bitcoins in all over the world without this bureaucracy called "fees and prohibitions".
This is very bad because there were lots of projects working on crypto debit cards.
Yes but basically it is not in mastercard and visa's vested interest to allow crypto payment to thrive. Very easy to understand.
But it's OK - after all, right now people treat btc as a store of value and an access to the blockchain world.