I mean it also requires the companies to be incorporated in CA, but Delaware has gone to great lengths to make it super easy to be "a Delaware company" w/o any actual meaningful proportion of the business there.
> The proposal would only apply to companies that post at least $10 million of taxable income from business conducted in California
Eg. lets says CA said you have to pay business tax if you make more than $X in CA, would that hold up?