Yeah, sure. You can, but let’s put it through a financial perspective: When comparing the cost of two alternatives, you should not put our flat rates versus the VAT / tax rates, since that’s not a correct comparison. You’ll need to include the notary costs, accountant fees, whatever you pay to your local authorities to register one, plus the days you’ll need to invest; so on so forth.
There is a beautiful chart made by World Bank here, so you can understand spending 15 days in lines, spending somewhere around 5 digits annually to create & maintain your statue as a business got nothin’ on having a virtual company where you pay as you go, wherever you go. *drops mic*