What? I don't think they wanted to remove cash from their system though, not all their client would have trust the digital currency, in short there will be no complete transition from fiat currency to digital currency and that is what the Visa have told to their article. - It should be added to the existing payment ecosystem - As what I am saying it would not be a complete transition, cryptocurrencies have advantages over fiat like the faster transfer and immutable data however Visa is not a new company, they have longing customer to protect with.
It does state in the above article they want to work on a digital system which will remove the physical dollar.
I took this for the use of
cash where it will be eventually phased out.
But then reading it from another article I found it is a bit more clear in what they are trying to do. After reading this one from Forbes a bit further and remembering their involvement with trying to uplift the libra currency for facebook, it is looking more like a corporate takeover of any ideas they took from that ordeal until it was swiftly eradicated from it being introduced to the customers on their platform.
https://www.forbes.com/sites/jasonbrett/2020/05/14/visa-submits-patent-application-for-digital-dollar-using-blockchainexcuse the posting of this site since it has advertisements on either side which aligns the entire article into the middle of the screen 
This is pretty interesting but not much of a surprise to myself. If you look at all aspects of the financial sector, cryptocurrency and blockchain technology have been adopted in some aspect by many major players ( IBM and Chase Bank for example). No one want's to get left behind so no matter how much crap they talk about the technologies, they know there's a strong future here.
Exactly and that didn't start yesterday. Big financial players ,and Visa among them, are experimenting with cryptocurrencies and blockchain for a long time.
Of course they know that is the future and they are not against it but they don't want to risk too much and they want to protect themselves and their profit. That is why they are still very cautious. But with time and especialy with good regulation and legal protection that will change for the better.
Yes it started quite a while back and they have attempted to try several times already but this was before the world wide crash and people not being able to survive without having the government sending them $6000 in stimulus packages and small businesses who have loans even more.
So this might just put this into overdrive to get it done this time around.
