Google doesn't allow prepaid cards last I checked. I tried to use a card from privacy.com and the Google form explicitly stated that you can't use prepaid cards.
You'll still owe the money, but it's unknown whether or not they'll come after you or report you to credit agencies (which they can do w/o SSN). I guess you could use a fake name and address, though.
Last time i checked AWS didn't accept prepaid cards. Even if they did, they could still after you if you live in the USA, and if the amount in question is significant, also in other countries.
Except they are in the process of changing their bank that they work with, so that they can change the type of cards they issue, and you have until the end of December to change over all your old cards from the old format to the new one, which means changing the card numbers, too.
This is a royal pain in the ass for those of us with hundreds of cards registered through them.
If there was another service of this type that existed, I’d switch to them in a heartbeat. And I will no longer recommend them here.