Opinion: Why Businesses Disappear From Google and How to Prevent It
https://www.scribd.com/document/1038532244/Is-Investing-in-Google-SEO-Worth-It-If-Your-Website-Isn-t-Showing-204865
It’s not always a dramatic “Google penalty” headline when a local business vanishes. More often, it’s a slow bleed of relevance, a technical mismatch, or a listing status problem that you only notice when the phone stops ringing