@webology @tcurdt I was in the very same position years ago, and had to move accounts away from google because I have used my gmail address every. After a few weeks I was so fed up with it that I simply deleted the gmail account. The important accounts have been moved to my personal domain and the rest... well, in case I need one again, I signed up for a new account.
What did you move to? And how was the rest of the migration?
...besides the manual website auth transitions.
@tcurdt @webology I switched to a personal domain and moved all my mails to mailbox.org. Since then I have moved at least 4 times again and now I am using Apples Mail service, cause it is easior for my wife. But I can now move easily without losing anything. For personal cloud storage we use Apple and a hosted NextCloud for contracts and stuff. But neither me or my wife are collectors. I think we use 400 GB Storage for all our personal data max. Not counting code repositories of course. :)