Up to a point, the protective buffer works as it's intended to: too many incorrect attempts and the account is blocked.
But then, as the article explores in some detail, the challenging of re-establishing access to your account presents its own wall, one that proves even higher. Contact with a human customer service representative lies somewhere on the other side of that essentially unscalable wall.
Gmail is hardly alone in providing little to no human customer service with its free apps and tools; the article explores some of the rationales for minimal service.
But if you're using Gmail or any other freemail (or other free apps, for that matter)for your small and midsized business, you might want to take a close look at the services' account blockage triggers, policies and remediation paths.
If, that is, you can find them.