I have an ice maker and buy ice because refrigerator moon ice leaves a lot to be desired. Moon ice causes beverages to go flat much faster than single crystal ice. Moon ice is nicely chewable after half has melted.
There are two types of ice, directionally frozen and outsize in freezing. Outside in causes an ice shell to form and then water in the middle must freeze but there is nowhere for it to expand. This produces ice that has a cloudy center due to internal stress and the ice crackles.
Directionally frozen ice is a single crystal that always remains clear with a smooth surface. The smooth surface doesn’t provide a site for CO2 bubbles form, thus much better at retaining carbonation.
A lot of people think fountain soda tastes different from bottled soda poured into a glass of ice. The real difference is that home ice (either moon or tray ice) offers a completely different experience from single crystal ice from a commercial ice maker. It is the ice that is different, not the soda.