By the way, you can also collab on a vault/folder over GDrive. DriveSync will be able to choose a "Shared with me" folder directly, but on Windows, first go to the web version (drive.google.com) and make a link to the shared folder in your "My Drive". Back in Windows, the link will be in your G:\My Drive folder. You can then mark that folder/link as "available offline" for the best experience. If you open the link in Windows, you'll get the full path to the folder and can then open it as a vault in Obsidian. You should end up with something like G:\.shortcut-targets-by-id\1-BkkGbtKp2342jSMgR7_HdfshNOAG3mg\OurCoolVault
By the way, you can also collab on a vault/folder over GDrive. DriveSync will be able to choose a "Shared with me" folder directly, but on Windows, first go to the web version (drive.google.com) and make a link to the shared folder in your "My Drive". Back in Windows, the link will be in your G:\My Drive folder. You can then mark that folder/link as "available offline" for the best experience. If you open the link in Windows, you'll get the full path to the folder and can then open it as a vault in Obsidian. You should end up with something like G:\.shortcut-targets-by-id\1-BkkGbtKp2342jSMgR7_HdfshNOAG3mg\OurCoolVault