Astone3145 :
"It is completely technologically unworkable for individual states to mandate different encryption standards in consumer products," Lieu told Reuters in an interview. "Apple can't make a different smartphone for California and New York and the rest of the country."
Try telling that to the companies that make lawnmowers and trimmers with CA specific emissions. Next time you go to home depot or lowes notice the stickers on all the lawn equipment that says not for sale or use in CA.
California is a big enough market that it's cost-effective to create a special design just for sale in California. If every state tried to mandate its own (different) emissions standards though, a lot of automakers would just give up and stop selling cars in the smaller states. At some point, the total cost to design and test the vehicles to pass a state's standards exceeds the expected profit of all your vehicle sales in that state.
That said, it's a lot easier to special case software than it is physical hardware. Heck, the Win 7 install DVDs were all identical, it was just your serial code which determined if the product activated as Home Premium or Professional or Ultimate.