One of the things that's stopped me from doing something like this so far is that the benefits are intangible, difficult or impossible to measure, but the costs are obvious and often measured in dollars.
I’m definitely not a huge fan from the privacy point of view and should degoogle at some point, but I’ve been using the google version with my own domain for ~13 years now (when it was free) and since a year ago have to pay for the Workplace edition, something like $10-15 a month.
What I understand is that at least if I’m paying for it, there’s a contractual agreement to not yolo-delete my account like in your example, and presumably there would be a way to reach some human in case of problems (unlike with free account).
I have learned my lesson. I guess for free iCloud account, I am paying by using Apple products.