We hope you have a Google Cloud Partner account verified for this purpose because you may know already that you cannot resell their services "legally" without it. If you don't have this, how will you guarantee reliability to your customers about their VPSes not being touched by you or zero involvement by not entering any of them when you will have their login IPs and passwords? What are the chances of an account or a VPS getting banned or flagged due to suspicious activity and if one account holds many VPSes but of different customers and that account gets suspended, who will take responsibility of other VPSes that will get suspended too but belong to other customers? How will you deal with flagged accounts' issues if some of your customers start mining through their VPS and get themselves banned or suspended?