alt Hacker NewsGoogle has an option for what to do with your account if you are inactive for a set period of time. So you can choose what to delete, and what to give access to someone you want. You can also have it send emails to up to 10 people, with whatever message you want.
Facebook has "Legacy Contacts" which is a similar setup to give your account to someone after you pass.
I did the math years ago and even then FB has a large percentage of it's user base dying daily.
I think there were one of the first to properly allow an account to be "memorialized" and moderated by loved ones.