Do you think that GLD can become a competitor for Visa / Mastercard?
Not. These are different things.
GLD is a token operating in a decentralized system. This is the future of the entire banking system
For what purposes in the future it will be possible to use the GLD token? Is it a means of payment?
You can use GLD tokens to buy gold in the marketplace. In the future, GLD may become a means of payment in other stores