- Two wrongs don't make a right: Someone behaving unethical does not excuse unethical behavior from someone else.
- There is a difference in the power dynamics of the relationships: Consumer and service provider VS citizen and state.
If anything, laws and right should be strengthened to explicitly ban this behavior.
Whether people are convinced or not – your claim was that it provided "justification".
My point is that it does no such thing – it doesn't hold up as a valid argument (which really is the bare minimum for something to even be considered as potentially true).