I’m not sure Facebook fits in considering they at least managed to get some other products along the way, and may get more.
I certainly don’t think Google fits the bill. Google is failing because they let their cash cow ruin everything else, not because they let it stagnate while they chased the next moonshot. Google Cloud could have easily been competitive with AWS and Azure in European Enterprise, but it’s not even considered an option because Google Advertising wouldn’t let it exist without data harvesting. Google had Office365 long before Microsoft took every organisation online. But Google failed to sell it because… well…
It’s very typical MBA though. Google has killed profitable products because those products weren’t growing enough. A silly metric really, but one which isn’t surprising when your CEO is a former McKinsey.
It couldn’t happen to a nicer company though, and at least it won’t kill people unlike Boeing.