Just as you can identify opportunities to upsell and cross-sell, authoritative consumer journey data can also inform you when your existing customers are exhibiting behaviors that indicate that they are considering a switch to a competitor.
Using the same example as in number 2, you could see that an auto insurance client is starting to shop for quotes again. Or, if you are in mortgage, you might see that your existing mortgage customer is researching refinancing options online. A recent new car purchase client enters the market nine months later shopping for another new car, wouldn't you like to reach that customer earlier in their journey to discuss a repeat loyalty purchase?