Companies like Microsoft, Google and Oracle might someday rule the EHR market, says Hospital Impact's Paul Roemer. Why? Because, following the model of the telecommunications and cable TV industries, content is king and the largest players benefit from having a huge subscriber base. The aforementioned firms don't have much in the way of subscribers to their PHRs now, but they have the financial wherewithal to gobble up companies doing the all the development work now. As they complete acquisitions, they add more users to their platforms, Roemer says. Hospital Impact