Apple was the first computer manufacturer to adopt USB on a wide scale (for which they were ridiculed at the time). Firewire remains the better technology of the two, but it is accordingly more expensive to implement; Apple still supports it fully on their pro computers. I use plenty of "highend firewire hardware" on a daily basis with my brand new MBP without issue. What, exactly, are you referring to?
How quickly we (all) forget ( http://www.google.com/search?q=apple+removes+firewire ). I misspoke, firewire 400 _was_ removed from a number of devices, as part of the regular upgrade path/hardware refresh, because "USB 2.0 won the connectivity fight in the lower end of the market". Despite me not being specific enough, and that Apple _currently_ ships a number of devices with firewire support, the fact remains that Apple does make hardware decisions based on their perception of user-experience, what they want to support, and which direction they want the market to go in -- I'm not sure how anyone can disagree with that, as I'm sure everyone makes decisions on what they want to support (other than maybe IE6), sometimes leaving users and customers in the lurch who are used to, or have a vested interest, in doing things the old, or a certain, way.
