That is no different to what might happen if the whole population became vegetarian. It is something people have to decide for themselves as a consumer and it

That is no different to what might happen if the whole population became vegetarian. It is something people have to decide for themselves as a consumer and it will be influenced by other factors like pricing, health, culture etc. Of course small scale food production is something that a lot of people enjoy and find worthwhile. I have kept chickens and grow vegetables. If land became available it may be bought up by those kind of people. This could become much more common in a world of automation and basic income. The world is full of people who would love to spend their lives growing high quality food inefficiently.