Of course, I agree with you, this solution is not valid for sites that will become viral, that is to say, 1% of us I think. Also note that this is not an irreversible solution either and I would like everyone to need more, even more, to see the need for a whole data center. Asked for backup, my site is saved 5 times a day over a period of 7 days on an old pc that manages the raid. So I have 35 restore points. Rsync does miracles.
Since your mishap with the fire I hope you are definitely given, and sharing your experience about it, I took my precautions.
I know, if a missile falls on my building, I lose everything, you'll be right. Only in the case where I am not in the building the day it happens, that I would have regrets.
So, okay, this is not the most professional solution but ...
1. I am free of any big bill.
2. I am free at all times.
3. I know where my data is.
4. I learned a lot.
... and 5, if I've always been with you for 10 years, it's because I can manage. That's why I shared my experience with this solution.