For most Americans, providing health care ought to be different from selling soap; they won't tolerate doctors acting like commissioned salesmen and investment bankers. And if that means having less market competition and more regulation in the health care system, it seems to be a trade-off they're willing to make.
Cornell and New York University hospitals (both of which my wife has been using since we returned) have ready access to technical equipment that is either hard to find or nonexistent in Britain. This includes both diagnostic equipment and state-of-the-art equipment used for physical therapy.
...The bill included all doctors' costs, two MRI scans, more than a dozen physical therapy sessions, numerous blood and pathology tests, and of course room and board in the hospital for a month... $25,752... the cost of just 10 physical therapy sessions at New York's Cornell University Hospital came to $27,000--greater than the entire bill from British Health Service!