In the sharing economy, you can ride around town in the personal car of a complete stranger (Uber) and ask the driver to drop you off at the apartment of a completely different stranger where you’ll spend the night (Airbnb). Sharing (actually, it is selling) underused resources is how to grow a business today.
Of course, this is nothing new to dairy processors. But rather than calling it sharing, they call it contract manufacturing or co-packing. It’s a common practice for dairies to fire up their processing equipment to manufacture dairy-based (and nondairy) foods and beverages for other companies.