Anecdote: It's happened twice for me. Once was for an app I published they decided was against ToS, two years after I published it. And the other was an acciden

Anecdote: It's happened twice for me. Once was for an app I published they decided was against ToS, two years after I published it. And the other was an accidental account deletion when upgrading Google Apps (luckily this one was mostly recoverable... if you know the right people at Google).