While I think there are many sites that should be made accessible to the blind (government information sites, perhaps some schools, etc.), there are other sites that are purely visual (someone's online picture album without any text) or otherwise should not be forced to be made accessible to the blind.
Whether or not a blind person would actually buy online at Target is debatable. True, he/she could be doing price comparisons before having a friend take him/her to a store to buy it offline.
But if we're going to get sue happy, let's look at some other targets (no pun intended!):
- iTunes and other online music sites that are not "accessible" to the deaf
- Publishers of Braille books that don't include regular print- those aren't "accessible" to sighted people
- sites only in English because they aren't "accessible" to non-English speakers
Also, it sounds like Target would be in perfect "compliance" if all they did was add the following to every single image on the site:
Gee, that would really be a huge improvement!