I like Apple's current lineup but I do think they have lost a certain segment of users: people who don't care about appearance or thinness and just want a modestly priced, upgradeable box.
Not sure those people were ever Apple customers.
Personally, I use Apple for their software. Having that software in an affordable, customizable, upgradable package would be very welcome. I can get beautiful hardware from most manufacturersand brands these days, so that isn't a unique selling point any longer.