It appears that he had a Workspace account which offered “unlimited” storage for a time, predicated on the account type being multiuser businesses or education, with a per-seat fee. Google phased out the unlimited storage awhile ago (over a year) after people discovered a loophole where paying for one account still provided unlimited storage. Predictable abuse followed (see /r/datahoarders). While I’m sympathetic to…
I'm usually sympathetic with businesses who failed to appreciate how much power very few power users really have, but this is Google we're talking about. Their sales and legal department is larger than 90% of tech companies. This was their mistake and their mistake only.