In the US healthcare system, clinicians and the business often have opposing objectives and values. This is starting to change with value based care becoming more popular, but it's still all about providing what the business wants, it just happens to align with the clinicians more these days. You'll still need to support IE9 due to that botched Vista upgrade, build out a custom EMR integration, and deliver whatever random feature the sales folks promised (can you automatically fax things?) before you can move on to the features that the clinicians actually want.
The system itself is how we ended up with billing-driven documentation EHRs like Epic. Paradoxically, due to massive adoption, I think Epic and Cerner are some of the only places where real innovation could happen. I think even huge companies like Apple, Amazon, and Google will have a hard time breaking into the space, no matter how much cash they throw at it. For them, the only answer is to go fully vertical like Kaiser-Permanente, but I doubt they have the stomach for this.