[dragonwriter]

> The problem here is that having remote customers does not count as "doing business in". So it only applies to brick and mortar located in California

Physical presence is not a requirement for commerce clause nexus (though it definitely satisfies it.) I’m not sure it ever was viewed as a requirement outside of sales taxes, and the precedent establishing it as a requirement for sales taxes was overturned by the Supreme Court in South Dakota v. Wayfair (2018).

> Otherwise it's illegal as due to fun laws only FED can regulate interstate commerce.

The “fun law” is the Constitution's Commerce Clause, and that’s not actually how it works.