We already see this - have you read the disclaimers on loans? Many will have a call out for California, Wisconsin, and South Dakota if I remember correctly, as those states have certain things required or prohibited.
Any online store dealing with gun or gun-adjacent stuff already has been dealing with variations of these for years; knives that are illegal in certain areas, etc.
Home Depot has to block shipping gas-powered lawn equipment to CA now.
Are these frictions good for either businesses or consumers? What is wrong with the desire that a good consumer protection protection be rolled out nationally rather that state by state?
That’s why there are efforts like the Uniform Commercial Code to harmonize basic laws across all 50 states. Unfortunately many aspects of it are stacked against consumers like UCITA that enables abusive software licensing practices.
It's a good goal but it's also surprisingly hard to pass, much of these things are actually handled at the state level and for the feds to step in requires exercising the commerce clause, which always causes a fight.