Well, I think you're making the assumption that the target user of a Macbook is a professional that has a hub and keeps it at her desk. I think the normal usage for a laptop is the mobility, for both professionals and non-professionals or not. I can stick it in my bag and carry it to a Starbucks or to my apartment or to work. I can take it to meet clients, or I can work on the train home. I can use it at my desk, on a chair in the lobby, or in a meeting room. Mobility is the biggest advantage to having a laptop. If I was always using a hub at a desk, then I might as well just have a desktop with dedicated monitors, yes?