In the new TOS of Youtube [1], it states that if your account is not deemed commercially viable, your Google account (i.e. your Gmail, your Google Photos, your Google Drive, etc.) can be closed down:
YouTube may terminate your access, or your Google
account’s access to all or part of the Service if YouTube
believes, in its sole discretion, that provision of the
Service to you is no longer commercially viable.
Makes sense they would make this decision, as Youtube is a big money-loser for Google and they want to do something about this. Still, this is more of a wake-up call to me than anything else that I need to get off Google.