Firewire has always been too expensive
I would have cut firewire on the lower-end laptops also. Very small number of people use it... cost reduction is more important for Apple's current strategy of converting low-end PC laptop users to apple... it's the $ sweatspot.
Firewire is already dead in the consumer markets... it's really as simple at that. USB 2.0 won several years ago.
It's simple numbers-- how many people actually USE Firewire?
If we were all completely honest and looked at the combined user base for Firewire we would see that the base is very small.
Look at Bestbuy for example -- They have 23 Firewire external hard drives available vs. 70 USB 2.0 external drives. That's pretty good but, as always the kicker and IMHO the killer, has always been price. The Firewire drives always cost a good thirty percent more. That's been the Achilles heal of the standard since it's inception.
I use firewire for audio and video on my MacPro and my wallet always stings a little more when I shell out extra loot for whatever firewire interface I need at the time. I justify it because I know it's the best solution for what I need to do. Firewire is better than USB and we could all find the the data to prove it but, Firewire interfaces are more expensive and in the end that's all that counts.
The standard "everyday user" just wants the
cheapest interface available. Unless there is a massive price cut, I think it's obvious that Firewire will be relegated to the professional/specialty market from now on. (If it isn't already.)
In any event, I think if the 10% (I don't think it's more that that) who NEED Firewire on their laptop are vocal enough it will be added to the Macbook in the very near future. Apple has responded in the recent past to it's "mis-steps." iPhone price reduction, Airport Extreme Gigabit - Non-Gigabit Models, MobileMe extension --- they do listen you just have to speak up.
Speak up!