I suspect it&#x27;s a licensing thing. The Soda Stream lets you make a liter of soda for about the price of a generic soda (when you factor in CO2 + syrup)<p>As for the size of the pod, a cap of syrup smaller than one 12 oz drink&#x27;s pod can make that same liter (though the Kold doesn&#x27;t have a CO2 cartridge, so I&#x27;m sure the tech transfers the fizziness to the pod somehow)