PG&E is a private company, much of the responsibility for their wildfire costs are the result of mismanagement of the risks.
Their costs get shouldered by their customers and their stock price. (they really should issue shares to pay their bills to dilute their stock price and cause their existing investors to lose money). In any case it's not going to get very willingly picked up by the government.
PG&E's liabilities aren't going to be put into taxes.
It's not the state government taking over PG&E, it's individual municipalities leaving the PG&E network and forming their own utility to buy wholesale electricity (or make some of their own) and distribute it to their citizens... resulting in a large reduction in cost in no small part because they no longer have to pay for PG&E's liabilities.
