Well I agree but if you want the world to be like the Mall of America where you can buy just about anything then you have to turn it all over to machines. Basically, we have to become like the people in Wall-E. Always consuming, never really thinking, and the majority of decisions being made by machines. I'm not saying I want that future, but you can't continue down the path of the excesses of consumerism without paying the price in some way (loss of personal autonomy to machines is one price of many to pay).

With a UBI/capitalist economy, you would still have monetary constraints on the individual consumers (just like today) and there would still be monetary constraints on raw materials/commodities (just like today).