Apple

If, theoretically, they did get it working, and accurate enough for basic monitoring, it would be absolutely revolutionary. I could see insurance companies jumping on subsidies, rather than continuously shelling out every month for test strips (which are ridiculously expensive) or CGM pucks (which are also ridiculously expensive, but generally only covered for Type I, at least in my area).

It's an extremely difficult problem, though. A few companies have been working on the tech for at least the past decade, and we're still not there yet.

Once we are there, I definitely see some kind of legal challenge from the companies profiting fro the exorbitant price of strips.