It may make some people regret buying the high-end product, but it makes the lower-end product more attractive. And besides, other companies get away with doing

It may make some people regret buying the high-end product, but it makes the lower-end product more attractive. And besides, other companies get away with doing this all the time. In fact one of the selling points of the dual-core Amd phenom II chips is that you have a decent chance of easily turning it into a quad-core chip for free.