These are great points but I would point out that "solid revenues" and "not raking it in" are not necessarily incongruous or exclusionary. What's wrong with steady and consistent revenues? It's not going to turn you into Mark Zuckerberg but it will sustain a business, employ people usefully, and provide a steady financial base to take chances from.
The point is that even for Apple, engaging on healthcare is risky. Yes, margins are available at volume, but it's not their standard modus operandi given the costs of regulation and reimbursement.
