Just want to ask this need to setup a encrypted channel and provide them a private key to open the channel, am I right? But how do we make sure there is no backdoor will open? It could be like provision the VM to some Uni student for there testing and offer a affordable cost.

Not really need high compute. We can spawn container as well, if you have heard how digital ocean doing there DC, you will know, they keep earning money but without a big DC. They pump all VM until max for 1 Hypervisor or something. All VM are sharing but not individual.

The objective here is depending who are the buyer? If a person truly need something from affordable price but can let them have a testlab, for me we can target this area. But just my 2cent.