Earlier quoted context omitted.
Actually, it's about a vendor making sure you buy their brand (again) when you need to fill up instead of going to the store and looking at the 50 choices in the detergent aisle one more time.
Really? Lots of people regularly switching their detergent?
Do this: pretend you own Tide. Do you want people pressing a button that sends you money for more tide, or do you want them going here: https://www.google.com/search?q=laundry+aisle&espv=2&biw=144...