Ten percent of the big fish still remain. There are still some blue whales. There are still some krill in Antarctica. There are a few oysters in Chesapeake Bay. Half the coral reefs are still in pretty good shape a jeweled belt around the middle of the planet. There's still time but not a lot to turn things around.
What's important at the grocery store is just as important in engines or medical systems. If the customer isn't satisfied if the stuff is getting stale if the shelf isn't right or if the offerings aren't right it's the same thing. You manage it like a small organization. You don't get hung up on zeros.