What do you think a dividend payment will do to the stock price?
Any business decision that DOESN'T drive stock price is a bad business decision. Remember, Apple's prime objective as a company is to generate value for its shareholders. That is their number 1 priority. Everything else is marketing fluff talk.
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Of course, why not. Everybody can purchase Apple shares, even Apple themselves.
Once you have the money, it should not be the only thing you care about. Think about your Job. Is everything you do money driven? I hope not.
Regarding Apple I have no idea what they do, however I hope they will stay successful and keep making me happy with great products and services in the future!