[luckylion]

With normal queuing, you get served eventually and can calculate the time it will take to get what you need. I fail to see how removing both of those parts makes it more efficient, and intuitively it seems that it would mostly lead everyone to avoid queuing unless absolutely necessary or to only try to buy things that surely nobody else wants. Mean wait time down, only the least desired products get bought, and even those only when starvation is the alternative.