Earlier quoted context omitted.
I don't really understand the point of this comment. "Credit cards don't need this network, except realistically they do , they just didn't used to." So in some scenario where electricity is unavailable, credit cards will be just as worthless in most cases as apps and gift cards.
You missed the point. Embossed CCs and an imprinter allows you to get your monet at a later date without a problem. Card present or online transactions only prevents you as a seller to make any money when the internet is not working.
But I am somewhat curious as to why nobody in my experience has implemented this on ground. Because if the customer pays with an actual credit card, the risk that the transaction won't go through when the internet comes back up is near-0, provided the card is valid. It is theoretically (and I assume practically too, given that every credit card agreement I've ever signed--and it's a lot of agreements, considering I was churning a lot for airline points--specifically outlined extra fees for "overcharging" your account) possible to overcharge the account this way (i.e. the transaction would still go through even if it'd blast past your credit limit, up to some limit though, probably)