Nope, I'm brazilian and have worked with company taxes while launching a startup. You're talking mostly about natural persons import taxes based on Correios importation.
What you are not seeing is: we have a pretty complex tax structure based on the kind of product/service you are providing. Also, we have a pretty bureaucratic import process, have you ever tried to deal with Port Customs over here? You have a 7 step process, each one involving some tax or payment to be made to one or other agency.
It's very hard too when the rules are always changing, when I opened the juridical person for my startup I had to contact a lawyer and an accountant to get the best deal on taxes for the service that I was providing, some months later the rules had changed and I'd to pay around 8% more on taxes than if I went as another type of company.
So yes, it's pretty hard to do business over here, you need to have a competent lawyer and accountant just to get your company out of the ground, like, reaaally in the beginning.