i think we'll soon see some very safe OTC version of GLP-1 just added to the food and drinks just like salt and sugar are added. That will allow for example Coke drinkers to drink it back again a lot.
That would be a good addition to food from the public health view. From the food producers point of view i think they would find some version which doesn't have effect of decreasing consumption, yet would prevent the gross obesity result from increased consumption, a "diet" like versions without it actually being a diet ones.