It's a rough road to fight that. Trader joes sells non-branded but also branded products. Albertsons/Safeway/Vons sells O brand stuff (the organics), Open Nature, Signature, Primotaglio, etc... Kroger sells a boat load of branded products as well. So it won't be just amazon that would be affected by something like that. However - having only read the article and not the actual bill, maybe it's only affecting "tech".