In an era where we buy things on Amazon, which is famous for not paying all the due taxes, how do you plan to enforce this? Also, I live 5km from the german bor

In an era where we buy things on Amazon, which is famous for not paying all the due taxes, how do you plan to enforce this? Also, I live 5km from the german border, I will just buy my TV there. What was/is? existing is that every for every TV sales, you had to give your name to the shop, which would transmit it to the taxman.