That's a lot of money to most people in the world. To my mother it would be 2 months of food.

Even more if taking in consideration planned obsolescence.

Totally, but in order to benefit from this system you'd probably also need a connected mattress, watch, maybe a continuous glucose monitor, some sort of workout device, etc.

It adds up. This is a country where half the population earns $40k or less a year.

Which is peanuts in the overall costs of healthcare. At what point are you given one as part of your welcome kit? There are already health plans in the US that offer fitbits or will subsidize their cost. The game becomes encouraging a healthier lifestyle to help people avoid getting sick or hurt which costs alot less than treating someone once they have developed a full blown disease. It's one place where both the patients' and the insurer's and hospitals' interests are all in line with each other.