That's not going to happen. California and now NY all require salary transparency. What's going to happen is the opposite. More and more states that don't have these laws, especially neighboring ones (like NJ, Connecticut) are going to disclose their salaries because they're competing with companies from those states that are being transparent, and attracting more candidates because of that transparency.

They're all going to surrender to what the market is asking of them. Salary transparency is quickly becoming table stakes