Pippin. Newton. Macintosh TV. Lisa. Macintosh Portable. eMate. You could argue for both the Apple III, AppleLink, and eWorld to have places on this list as well. And that's not even mentioning the unreleased products that were killed internally, such as Copeland and project Star Trek (well known), and the less well known ones I probably can't mention without violating NDA.
First, who provides support for "products" that never actually become "products"? This removes all of your "unreleased products" (in engineering, we call those "canceled R&D projects"). Quite frankly, your inclusion of those non-products in your argument just makes you sound like you're grasping at straws (which you obviously are, as seen below).
As for the others, Pippin was sold to Bandai; thus Apple had no further responsibility to support it; Macintosh TV: Fairly good idea for the time, but miniscule sales usually means miniscule support for any product from any company; same thing with the Newton, Lisa, Macintosh Portable and the eMate, and the Apple /// as well. Low sales numbers always translates into short product life-cycles, which always translates into abbreviated support.
How much support did MS throw behind Windows ME, for example?
As for AppleLink and eWorld, at that time, there were dozens, if not hundreds, of "internet-y" software packages that simply didn't make it, like, for example, CyberDog; which even had a pretty devoted following; but just not in sufficient numbers to continue developing/supporting it.
But when we look at Apple's product-support track record, overall, there is little argument that can be reasonably made that they fall-short in that category, seriously, when compared with the rest of the "high-tech-consumer-computing-products" industry.
So, kindly cite a "successful" Apple Product that suffered from Premature Support Termination, or STFU.