Isn't that applicable to any other country?
If you were the post office, would you handle goods from an external courier & collect/redirect the tax due for free?
Tax is a part of life wherever you live, sorry but I get fed up of British moaning how we get ripped off for everything. It's the same whereveryou live just dished up in different ways
If folks don't like it, move to some mythical, idyllic tax free haven where houses are cheap, wages are high, holidays long & the roads well surfaced and twisty (then let me know where it is & I'll move there too! )