For post-paid things like cloud offerings, prepaid cards are much easier to get compared to debit/credit, so you end up with a lot more fake accounts that just

For post-paid things like cloud offerings, prepaid cards are much easier to get compared to debit/credit, so you end up with a lot more fake accounts that just run malware/use hundreds of dollars in resources in a month only to have that card decline after the money on the prepaid is already spent somewhere else.