It seems to me that Amazons long term strategy is to become a "Conglomerate of Brands", leveraging the profits from one business unit to buy out unrelated business. This sort of acquisition doesn't, as far as I can see, advance a particular core business unit (I'm aware Amazon have toyed with games publishing, but its not exactly a core business unit).

I suppose it makes sense, investors want their investment to be safe, by diversifying through acquisition they can give that to shareholders.

For the other rumoured purchasers, Disney and Apple, would have a direct affect on their business strategy. Disney as a media asset business, and Apple though the potential to expand their Gaming strategy on their own platforms.