@johnjantsch – I think that phenomena will be true for big names such as yours, Mari Smith or @mike-stelzner .  I am not sure that other small business will see that same response.
Also, it will depend on how people are using their personal profiles.  I want my personal profile to only be for friends and family, so I have my privacy settings cranked down pretty far and hope no one does subscribe.  I definitely want them to go to my business page.  Whether that is the correct decision in terms of marketing – I don’t know.  But it is the correct decision in terms of my privacy.

@andrea-vahl – It’s interesting, isn’t it?  If we do post business posts more on our personal page, we are potentially violating FB’s terms of service.  So the subscribe feature doesn’t always make sense.  I can subscribe to a celebrity, which means they don’t have to friend me and I can read their updates, but if a small biz starts posting updates on their personal page, they can get in trouble for it.