I think that is why Carolina Cloud pays the interest in credits (redeemable for their services), as opposed to cash. It is not much different how some business give you a discount if you pay the amount upfront or in a more convenient form of payment.

At scale, a decent number of commercial/business agreements have Net Discount provisions (or provisions to that effect); basically get a % discount if you pay within X days; or pay the full amount with no discount in Y days, so the general arrangement is far from unorthodox.

Opening it up to everyone is nice.