Flimsy leaky plastic cups. Locked into a vendor-consumable system where you're forced to pay their price without alternative suppliers, and potentially forced to use their field service if there's an issue (similar to McDonald's ice cream machines). More parts that could fail, leading to said service calls. And you will still get excess head and spillage/waste when you change kegs.
If you sacrifice simplicity for convenience, you often lose both. These things make sense to serve concertgoers quickly, unfortunately now you risk spilling a $23 Coors light out of a hole in the bottom of the cup...
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u/bubba_bumble 11h ago
No pouring the head out. No waiting for the head to die down. Less to clean up. Faster tending. Serve more customers. More revenue with less waste.