Plus a closed architecture.
By "closed architecture" you really mean "lack of expandibility". Windows isn't any less closed than Apple; there's just a lot more software on Windows.
Expandibility options are limited on ANY laptop, or on the Mac Mini or those SFF PCs. And a lot of those cheaper windows desktops lack PCIe/AGP slots for upgrading the video beyond the mediocre on board video. I can still upgrade the ram on board, and hard drive. Your options of upgrading the optical drive are limited but that's true with most laptops.
A lot easier to use? Not if you've been using a PC for twenty years.
But that's using a PC with 3 major revisions- 3.1 to 95, 98/95/ME to 2000, or 2000 to XP. For people switching from 95/98/ME to XP, they got a double whammy- a change to the GUI and a change to the concepts behind windows (multiple user logins and beyng a "sysadmin" on your PC, not just simply running dos/windows). Vista promises to be quite different still next year; what exactly would be so different in switching from XP/2000 to MacOS this or next year?
My sister in law got a Powerbook last year for Christmas. 5 minutes after plugging it in, she was good to go and was using her mac, and proceeded to make a photo-book (some product Apple sells) using photos she had stored on some Memory sticks she had from her trip to Hawaii last year. She's been using windows for over 10 years. She's had to "adjust" of course because there's no control panel and things work a bit differently. I found the Mac to be a little strange to use, mainly due to keyboard layout on her laptop- no home/end or pageup/down keys on her laptop which I use a bit (and I've been using windows for 13 years, but used to use os/2 and the amiga before windows).