Profitability is a very interesting calculation. Apple has made statements recently (this week) that have caused investors to be rather concerned because they a

Profitability is a very interesting calculation. Apple has made statements recently (this week) that have caused investors to be rather concerned because they are showing large dips in gross profit margin. So, really, while we all love to look at the number of devises a company like Apple sells, the margins are what really matters. Over all, if their profit margins on their Mac products are more stable (which they are) and are high enough (also, which they are), the number of units sold becomes less interesting as long as total sales do not drop below a certain amount. Also, as a side note, Apple has an ecosystem that involves all of their devises. They double dip from Mac's with their app store and their digital content even on their PC machines.