There’s obviously no certainties - and I’m not a betting man - but I think this author is on to something.

Healthcare fits the brief of a “painful, expensive problem where technology can help”. That’s the fundamental criteria for any software development, and in this case requires good integration with hardware. That kind of problem plays to Apple’s strengths.

Coupled with their long-standing and (apparent) sincere interest in customer’s health and well-being and this seems a safe bet.