A latte sounds quite expensive in computational terms. I was definitely unclear but I was thinking about the transaction costs which I understand are much cheaper on PoS chains but still quite a bit higher than the real computational cost. The other side of it is how massively convoluted the pricing is.
I don’t know about computational costs but in Tezos the transaction cost is something like 0.50$ atm.
NFTs are definitely in a proof of concept stage, but I 100% expect them to improve dramatically in the next 12-24 months. People are working on solutions for virtually every problem that’s been thought of - fakes, rights managements etc.
And they have already gained widespread adoption in the art world. As far as art goes NFTs are now fully adopted. NFTs are the first blockchain win. I expect gaming to be next.