Agree Rob, rent seeking is typically self interested behavior and is not limited just to corporations, although they are typically the biggest offenders. Re American healthcare, while many commentators have been quick to blame the "free market" for the high costs in the American private healthcare system, excessive costs are not actually the fault of the "free market", so to speak. So why doesn't private insurance provide affordable, secure coverage that customers want? Invariably, the problem resides amongst a number of specific government policies, which protect insurance companies from competition and ensure large windfall profits.
Consider the following: in a truly free market, insurance companies would compete for every last customer, but in America’s case the insurance companies sell policies to business owners rather than individual employees. Why is this, one may wonder? It's because unless workers surrender their earnings and coverage decisions to their employer, the federal government hits them with a tax penalty.
This tax penalty is due to the fact, Americans must use their after-tax income, to buy individual polices (as opposed to the before-tax paycheck deductions, employers make to pay for coverage). This policy has resulted in insurance providers, only needing to compete for business owners rather than individual customers, and once a business is secured by a provider, the company essentially has guaranteed revenue.
The fact most health insurance disappears at the moment people most need it (when they lose their jobs) is just one indication the system is rigged to serve someone other than the employees. But this is just one issue in the debacle, there are in fact a number of different government polices, we could focus on and discuss: consider: 1) guaranteed issues, 2) community ratings, 3) mandated coverage, 4) state protected monopolies and the already discussed 5) employer-provided health insurance.
You can read more on this here: http://mises.org/story/3727
Whats interesting is that many countries outside of America (including New Zealand) actually benefit from America's private healthcare system. This is because we import a lot of the latest technology created from their companies, which despite being protected from competition, are still more innovative than the public sector. It might be in our best interest that America keeps a private healthcare system...