I think reason 2 would be a very poor excuse. Cutting costs and charging more is horrible. TBH having a replaceable cable would save them more than not having one. Cables will break regardless and having to replace an entire $800 IEM is more costly than just shipping a replacement cable (although it doesn't costs nearly $800 to manufacture the item).
Edited by lee730 - 6/30/12 at 7:55am