I don't agree all the Android tablets should specifically jump on the Amazon bandwagon, but they do need to do something to provide more of a total experience to the end user for the price. A good suite of well-known content providers (even if it does have to be Amazon), ready to go out of the box, would help, I agree. I don't drink the apple Kool-Aid, but they do tie their tablets into itunes. I feel the HP tablet was a colossal failure due to both a lack of content and apps, along with the high price.
Tablets could even be geared toward enterprise usage with the right suite of apps and content; the apple tablets are still considered "lifestyle toys" by many. That is why Blackberry still hangs on, despite falling market share--their products are still geared toward (and accepted by) the corporate world. The company that comes up with a corporate/enterprise-geared Android tablet or phone will have the proverbial "killer app" on hand. I know a few who won't jump to apple or Android for that reason (despite my telling them otherwise ).
BTW, I should be an analyst, and get paid for restating the blindingly obvious.