I'm going to take a wild guess and say the author isn't from the US. He includes sales tax on items purchased for resale.... which is an exception in every state that I know of. Even if you purchase an item at retail with sales tax, you can file to receive the money back from the state. Additionally sales tax has nothing to do with whether your supply chain is fully integrated, and hiring all of your suppliers as emp…
For easy numbers, in the independent contractor model, each person pay $0.30 in payroll taxes (before income tax) while in the employee model, the employee only pays $0.15 and the business pays the other $0.15. If gross pay is $1 in both cases, the employee makes more. Because of this, real employers are going to pay salaries of less than $1 to account for overhead like payroll taxes, office space and the risk of providing a steady paycheck vs. paying per production.
I understand the author is simplifying things to make an argument for VAT but there are lots of variables in both scenarios including payroll tax and the option for retailers to purchase goods without paying sales tax to wholesalers.