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.
I really wanted to try out their new autoML but I was paranoid of entering my credit card and getting banned from Google