Yes, density. And scaling of services. But scaling issues should subside over time. The U.S. spends 3.8 trillion a year on healthcare. Scaling issues five yea

Yes, density. And scaling of services. But scaling issues should subside over time. The U.S. spends 3.8 trillion a year on healthcare. Scaling issues five years out? Less acceptable. 20 years out? Unacceptable.