Why is Mastercard taking the next step towards cryptography?

As it relates to cryptocurrencies, particularly 

Bitcoin, Mastercard has monitored customer use. 

The firm has seen customers purchasing crypto assets using their Mastercard 

debit cards and beginning to use crypto cards on its network.

With cryptocurrencies becoming more accepted as an investment and payment method, Mastercard is taking steps to make it easier for people to transact using secure digital currencies