Well, duh... lol. Whats fun for 1/2 people, would be fun for 50/100 (more people).
Some people have fun from obtaining profit, stocking may be boring... but getting paid to do is fun for some which is why they do it. Therefore, allowing everyone to do it will render the same fun for alot more people.
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But, wait! Owning a business is fun... hm, why not give everyone a business, eh sales?