If the auto and finance industries can have government hand outs, then surely the food industry can have them too?

could just stop having the sales they have in the weekly coupons that are ussually 30% off or B1G1 free.

No law against ending "on sale" prices.

Please stop spreading misinformation. The price gouging laws allow prices to increase without limit to pay for increased wages or costs: https://oag.ca.gov/consumers/pricegougingduringdisasters#8C

First, these laws are generally pretty flexible. They account for cost increased during emergencies. Also, grocery costs vary anyway and so the "base" price can be higher than normal supermarket prices.

Second, labour costs are not 100% of a supermarket's costs, so a 10% increase covers a lot of extra labour. Considering the sheer volume of sales they're doing, it might actually pay for that %200-%300 wage increase... though you don't actually need it to go that high.