This doesn’t fit my definition of a “bubble”, which is unsustainable hyper-inflation due to asset chasing and speculation, where demand exceeds supply. I think health care is in a crisis of a different sort. Investors haven’t been falling over each other to invest in it, but health related costs have been escalating to very high levels. The evidence for this is in the high costs of medical treatment, health insurance and drugs. While R&D may be one reason, large profits seeking corporations, and a litigious climate, may have something to do with it.