This is the flip-side benefit to living in Right-to-Work states. On the one hand, it's nearly impossible to unionize, but working as a contractor in Virginia, I had an agency try exercise the non-compete against me when I tried to take a job directly with their client. That client happened to be the Society for Human Resource Management. Their management laughed at the attempt and had a lawyer send the agency a letter explaining that Virginia was a Right-to-Work state and the non-compete was unenforceable.
In North Carolina, another Right-to-Work state, my government contractor tried to exercise the non-compete I had with them to prevent other companies from competing for the contract. My co-worker had us all sign up with his lawyer, who defended us breaking the non-compete as unenforceable in NC. The contractor didn't bother taking the case to court and was only using the non-compete to bully employees who didn't know better.
I've been hearing about lobbyists working to make non-competes enforceable in Right-to-Work states, and I'm not surprised. The point of the laws was to defend corporations against unions. I imagine the fact that it protects individuals against companies is undesirable to the powers that be.