You're right, Macintosh started life as a little all-in-one and a very cute one at that. Its predecessor, the Lisa, was also an all-in-one but considerably bulkier and heavier. I owned a second-hand Lisa for some time and sold it to a big Apple fan. The LisaOffice suite laid the conceptual groundwork for office applications that would follow.
However, at the time, laptop computers were simply not practical. They weren't even called laptops, but "portables". The original Mac's form factor made them both desktops and portables at the same time! However, expandability was limited and so was power. Imagine 8-inch captive screens.
With the release of the Macintosh II, Apple introduced the true desktop form factor. Color also made its debut in the Mac II series and performance was raised. The Mac II was very successful and expanded to a variety of models and form factors. The all-in-one remained on sale, but the excitement was in the II and Quadra series.
Afterward, the first Macintosh laptop appeared. One might say that it didn't really make sense to continue selling all-in-ones. Laptops could totally replace them, were it not for the price difference. To be honest, I was never impressed by Apple's OS 7,8,9 laptops. There was always one thing or another about them that made them a deal-breaker for me.
Apple's PowerBooks today, however, are so compelling in every respect that I abandoned my search for another PC laptop to replace my 4-year old, operationally perfect, Dell Inspiron. In fact, during my search, I found PC laptops to be significantly lacking in one way or another. Apple's 15-inch 1.25 GHz PowerBook was the perfect answer: FireWire, USB 2.0, 80GB HD, Fast CPU, memory expandable to 2GB, 15-in high-res screen, built-in 54g, built-in Bluetooth, compact form factor, 3+ hour battery life, and
light weight. The industrial design, moreover, was beautiful. Beauty and Brains. Try to find that in the Windows world.
With low-cost and powerful iBooks and PowerBooks now available, I would expect the primary market for desktop all-in-ones to consist of institutions who want to provide public access Macintoshes (libraries, printing bureaus, internet cafes, etc.) and corporations, without having to worry too much about theft. Laptops, on the other hand, are more easily stolen. Nevertheless, there's a market for desktop all-in-ones among individual consumers, but I suspect they'll be migrating to laptops in greater and greater numbers and drying up that segment. Apple wanted to make the laptop a perfectly viable alternative to the desktop. I think they've succeeded. Power users, however, will always go for the dual-processor towers.
Thus, the home desktop market, I think, might be better served with at least a two-piece unit (detached monitor). The all-in-one iMac form factor doesn't make much sense to me any more. Why should the monitor be permanently coupled to the computer? What benefit does it provide now? Portability? I don't think that's a compelling reason. Ease of setup? Nope; the rest of the world (Wintel) has no problems connecting VGA cables. Children? Nope; all the kids I've seen are, on average, MORE computer savvy than the typical adult!
Originally posted by ChrisH3677
ksz - are you in an apple selling business? You seem to have a very good understanding of them from that perspective.
No no! I'm just an Apple admirer (don't like the connotation of the word "fan"

) -- a layperson when it comes to talking about Apple. Professionally, I'm an engineering manager.