Apple was smart not to compete on the low-end for watches. Median income in the USA is $68,703. Why would someone spend 1/25 of 1 percent of their income on something that they wear 100% of the time? That makes no sense. I shell out $200-$300 each year for the latest FitBit (Apple Watch is promising, but that battery life :(. The sleep tracking is gold).
Here’s the income distribution per household from the last census: https://www.census.gov/content/dam/Census/library/visualizat... There are a lot of people that can’t spend $200 on a watch, but can spend $20.
U.S. per capita healthcare spending is $11,172. If the U.S. gave everyone a $200 a year tax credit to spend on a smart health watch, we'd probably save $2,000 a year per capita and get a 10x ROI.