How about you? Are YOU an employer? Would YOU employ MORE people simply because they cost less to do so? Maybe for a SMALL business, sure. It would mean less work for the owner, which MIGHT be worth it to said owner if the difference in cost were great enough....but ultimately, probably not. Even at 4 bucks per hour, at 30 hours per week, that employee still costs more than the typical small business owner is willing to give up just so he/she doesn't have to work as hard.
No, you only hire more people to fill more demand, otherwise, no MATTER the cost of employees wages, you take a hit to your bottom line.
Is that logical, or not?