[digitalzombie]

Your link doesn't prove anything it's just a federal tax.

The other reply posted a link and California does not have the highest income tax rate, it's 4th.

So from the get go your premise is false.

Also liberal or not you're stating an opinion of why hypothetical companies should do this and that, all the while we still have Silicon Valley and Hollywood in California. So in the face of reality you have not yet successfully prove or convincingly argue that high tax will drive away companies.