It's only a matter of time when we will be able to use crypto tokens to make payments. Today we might think it's impossible but we are forgetting, the word Impossible itself says "I'm possible." We all are aware of amazon market place giving way to crypto, soon other ecommerce sites will pave way for it too.
And when it comes to POB, it is going to happen for sure but yes, not as soon as it is expected for other popular crypto currencies like BTC and ETH. POB first needs to get an identity for itself and a place in the exchanges and then only can we expect it to get a place in the marketplace.
Pob community as not as much user and much community so it can be strong enough yet to be used to buy and sell