As has been made clear in many threads on this forum, putting restrictions on where you can live violates the constitution. That being said, a province is granting you PR in good faith so that you may contribute to the economic developments there. If you have no intention of staying there from the get go, you are essentially committing a fraud. Does that sit well with your conscience? I realize that sometimes jobs simply don't work out, or a great out of state opportunity comes up. But unless you have made serious efforts to find a job in the province, jumping the ships is tantamount to unethical behavior.