"I think it's going to look like whatever we want it to look like, frankly,'' Mr Dawson said of future food preferences at the Australian Bureau of Agricultural and Resource Economics and Sciences (ABARES) conference.
"That's going to mean an explosion in consumer choice.''
Coles general manager of corporate affairs Robert Hadler agreed anything was possible, saying technology would "fundamentally change'' the way people will shop and what they buy.
But some experts think there could also be a corresponding shift towards healthier, organic produce, with more fruit and veggies on every plate.
With a significantly older population, one panellist predicted a boom in vitamins, organic foods and eco-produce in the average diet.
"I think there'll be a... forever young trend,'' said Trysh Stone from the Department of Agriculture, Fisheries and Forestry.
"I'm going to eat in a way that's going to help me live and survive.''
Australians should be more "health literate'' by 2030, with more people eating balanced meals and avoiding deadly diseases associated with a poor diet, said Australian Health and Welfare's Lisa McGlynn.
- AAP