Several years ago, one of my Gmail accounts (mainly used for non-serious purposes, such as registering on gaming forums) was stolen due to a password leak. I received an login alert via a forwarded email, but since I hadn’t set up a recovery email address, I lost control of the account. I couldn’t even find any way to reach out to someone to take action and recover my email account.

All you can do it post a thread on the support forums, and nothing happen anymore;

I think for ordinary users (rather than developers or merchants), this is even worse.