You seem fixated on the “moving” aspect, like it is some sort of horrible sin to mention this as a truth of federalism. Yet it is a strength of the federalist design. Of course, one can work to CHANGE a state’s system too. That is another course.
Moving, though, is another way of voting. With your feet. Businesses and people are doing it by the millions. They’re leaving California and New York for states with better laws. (see: Texas and Florida)
Why do you hate the Tenth Amendment? Should it be repealed?
What you seem to not understand is that there are different laws in the various states because the people of the different states WANT there to be different laws.
The people of each state are represented by a Republican form of government, as required by the Constitution (see: Article IV, Section 4).
Unless one is prepared to argue Massachusetts (or California or New York) does NOT have a “Republican” form of government (an extraordinary view indeed, as it has not been seriously espoused by any reasonable commentator on either side of the political spectrum), then the distaste one has for a law really can’t be based on the notion that the PEOPLE of the state are powerless to change said law.
If someone is in a state entrenched in policies that unfairly take or re-distribute wealth, you can work to change it, endure it, or leave. America is a great place in that regard.
And you seem prone to excusing socialism.