Real talk though, there's no chance of SD attracting CA's workforce by changing policy.
True, because they will never have any self-awareness in SD or any other flyover state. They will cry and complain about how they can't attract these professionals but they won't make any changes to the shitty society that drove those people away in the first place.
Leaving sunny CA to live in a tundra and probably be a cowboy is simply a non-starter.
There are people who would prefer the weather there, but still won't move there because they don't want to deal with the provincial hicks in sticks bullshit. THAT is the non-starter, which as you said, is not going to change.