When I purchase a game for the vita. It says shareable on 2 different vitas associated on the same account. Does this mean I can put my purchased select content on my sons vita as well since he is on my sub account? Just curious.
No. Sub-accounts have no more ability to share content than completely unrelated accounts do. Your sub-accounts have no access to the content that your account purchases, and your account has no access to the content that your sub-accounts purchase.
How's that working for Sony and the Vita's sales? They're pulling an Xbox One on the excuse that it's a handheld. In other words, if Microsoft had a handheld system, then at E3 Sony might have been all like :But on the Vita you can share games.
The PSP had the same restriction, and it sold more than 50 million units worldwide; which is almost as many as the XBox 360. I don't think that it has anything to do with the sales of the Vita, good or bad.