Google Cloud Platform Server and GDrive 750GB Limit

I tried to response to the newly created topic " Crypt Tb of data already uploaded on GSuite" but its closed already.

what i am asking myself is if it makes sense to transfer data from gdrive to a crypted mount at that gdrive.
If i rent a google cloud platform server and transfer the files to the crypt mount it would be very easy to get the encryption keys as the unencrypted files are on the server being downloaded and an encrypted stream is being uploaded at the same time.
even if i am working on a secure VM (you can rent them at google cloud platform as well) it wouldnt change a thing as the data stream is still the same.

what do you think about that?