I agree with johnklos that people's investment in Old Apple is huge. I was just looking up info on the IIci I am working on and trying to fathom that they charged around $6k of 1990s money for this.
But tech companies - especially larger, image-conscious ones - tend to have a backwards approach to legacy products. Legacy is something of a dirty word for them, because it implies support for things they want to leave behind. Not unlike how I can practically feel the groaning over the phone when I try to still get some support in authorizing a program for OS 9. Much of this comes down to the image of their products and the use of them they want to project. This marketplace is fueled by novelty, so showing off the great stuff they were capable of 20-30 years ago can be perceived as extremely negative. Somewhere out there, there will be some git laughing beer up his nose at a System 7 video with the realization that "This is wut those great MACS look like LOL". Acknowledging their illustrious past does not help them to convey that they are The Latest Thing.
Also, the industry-wide expectation that any decent company offers instant access to everything via FTP has mostly disappeared over the past ten years. Even many university FTPs have disappeared. I think this "lets them off the hook" of maintaining these resources (not that it took much!) for security reasons. Secure FTP never caught on as much. Consider also the rampant bot-spamming to public spaces, such as has affected Usenet recently. I still think that FTP is one of the easiest, most effective ways to host and share data - but it has certainly lost favor with many.