Those things aren't being done with the EHR data, at least in the real world yet. Those benefits aren't being realised yet (which is far more likely due to regulation of the data rather than EHR uptake). To doctors, an EHR is just a replacement for paper with a clunky, hard to use interface. It's hard to beat the flexibility of paper.
From what I've seen from EHRs and other related software, they're absolute garbage to use. I wouldn't want to use one either.
Having a patients entire history at your fingertips collected through their lifetime.
Being able to apply machine learning to their symptoms to find possible obscure issues
Being able to combine data from populations to find new symptoms for illnesses
Being able to identify outbreaks alot faster
Better ability to analyize complex data to prevent drug interaction
And so many more.
No I think primary care and internal medicine physicians are threatened by technology and are resisting it, because 95% of what their job consists of is exactly what computers are really really good at, crunching data to find statistically likely outcomes.
Tech is going to do to medicine what is already happening in Law. Put 90% of physicians out of business by making the few employed physicians infinitely more productive.
In a 20 years we're going to view having a physician diagnose you as primitive as having a physician bleed you with leeches.