When some particular item as currently made does meet California regulations the maker has four options: 1. Keep the item as is and don't sell it in California

When some particular item as currently made does meet California regulations the maker has four options: 1. Keep the item as is and don't sell it in California. 2. Make a California version that meets regulations. Sell that only in California. Keep making the original version and sell it elsewhere. 3. Same as #2 except sell the California version along with the original version outside of California. 4. Make a California version that meets regulations. Stop making the original version and sell the California version everywhere. California is a big enough market that many makers cross off #1. Once they are making a California version it often turns out they selling that everywhere is more efficient for them than keeping the original version around.