Small note that most credit cards allow you to artificially increase the credit card limit by simply contributing the payment on a zero balance.

Example, $0 balance, card limit $1k, pay onto the card $10k, card limit is now $11k.

$10k of that is really prepaid and $1k is truly credit, but it would have solved their problems given they had the cash on hand and mostly wanted to avoid declines on their cards due to draining the credit limit to $0.

The problem with other forms of payments is they're only usually accepted on a contract annual basis and you're now vendor locked for the remainder of the contract. You're also up fronting the capital to that vendor.