It would be a great place to do a startup (there are a bunch of niches which could easily support multiple companies) -- it's mainly implementing open but antiquated specs from the late 1980s, doing interop testing with existing vendors, and being able to go through the long sales cycle. You would want some MDs on the team, which makes it kind of expensive (young MDs need to pay off their schooling, and older ones would be giving up profitable jobs).
The $40-80k per EHR thing is a big market opportunity.