Cannabis stocks certainly care about their anti-cannabis regulation.

You know why I can play this game all day? Because the base premise doesn't hold.

Sure, also all the gambling/prediction markets, abortion-adjacent stocks etc. could potentially be down. In terms of the market, though, those industries just don't matter. The lion's share of the economy (energy, finance, technology, tobacco, firearms) benefit from the election of a party that is hostile to their regulation. It's not really debatable. What is debatable is whether that's correct or good, since deregulation allows those organizations to potentially externalize costs to the environment, society, etc.