SUMMARY: McKinsey estimates that global digital-health revenues—from telemedicine, online pharmacies, wearable devices, and so on—will rise from $350bn last year to $600bn in 2024. I’m not so sure.

SUMMARY: McKinsey estimates that global digital-health revenues—from telemedicine, online pharmacies, wearable devices, and so on—will rise from $350bn last year to $600bn in 2024. I’m not so sure.