Factory paint is simply a different formulation, and the baking is a different process. Plenty of shops bake panels (and plenty of panels can be done off the vehicle) but the factory baking is done at higher temperatures. Also, the paint companies simply don't sell the same formula to the aftermarket and (AFAIK) the guns used to apply it are completely different anyhow.
Even if you could get the paint makers to sell you the proper product, and you got a spraygun to emulate the factory painting system, you'd still have to get the right, high-temp oven. Nobody's gonna go through any of that, wouldn't be cost effective, especially since 99.999% of customers don't know/care. Heh heh, the profit margins in autobody/paint aren't all that high as it is
jesselyons2002- Wash it and glaze it, at least the glaze will provide a little protection. I like Meguiar's #5 New Car Glaze.