So you think Apple will completely disregard what customers want?
The white MacBook is relatively cheap and can be easily upgraded to 6 GB RAM and a 750 GB hard drive. It has a 2.4 GHz processor. It has ten hours battery life. It has a screen that is much more suitable for people of 40 or more years.
Dropping the white MacBook means substantially fewer sales.
I see potential customers saying that Apple has gone completely bonkers, that there is no way they are buying a laptop that doesn't have a 500 GB drive, that cannot read any CD or DVD of their huge collection, and they are not paying through the nose for a 500 GB SSD drive. Note that I say potential customers, not customers, since most of them won't turn into customers.