I really wanted to try out their new autoML but I was paranoid of entering my credit card and getting banned from Google
this is FUCKED. its aking to holding my youtube and google play accounts hostage.
That way Google won't ban your main account for non-payment.
It's the only way, especially considering Google cloud has no functionality to cap spending.
For a ban, they need something concrete like using the same browser cookies, recovery email address or phone number.
IP isn't enough alone - you could be on shared WiFi.
Also, after account creation, you can log in from the same place without risk, or even use multi-login to log into both accounts at the same time.
Phone and desktop OSs should grow a pair and create a virtualization protocol to randomize tracking info to keep PII anonymous.
With that said, If I delivered you services and then you credit card chargebacked me, I'd cut all relations with you as well.