Big Insurance, Big Medicine

ObamaCare's once and future harms have been well chronicled, but the major effects so far are less obvious and arguably more important: A wave of consolidation is washing over the health markets, and the result is going to be higher costs.

The turn toward consolidation among insurance companies is not new, and neither is it among doctors, hospitals and other providers. Yet the health bill has accelerated these trends, as all sides race to anticipate and manage political risk and regulatory uncertainty. This dynamic is leading to much larger hospital systems and physician groups, and fewer insurers dominated by a handful of national conglomerates. ObamaCare was sold using the language of choice and competition, but it is actually reducing...