Yes, because if the Foomatic chain lasts 10,000 miles, and the Bartasic one only 6,000, the foomatic people will make a big deal of it, and justify a higher price for the chain. If you don't believe me, look at the advertising material for 10 speed chains from the companies who aren't Shimano. Lifespan is a sales point for all of them. You'll also note that not one of them recommends using a totally unsuitable lubricant, like, oh, paraffin wax.