The edge that cordova/phonegap/ionic will retain is the HTML and CSS part. As well as, at least for a little while, a more robust plugin ecosystem. Though that second one will change VERY rapidly.
The other developers on my team are very much frontend & CSS types.
I would be too much of a bottleneck if I were the only developer able to write the code for the app.
If xamarin were free when I started, I may have given it more time in evaluation, but at the end of the day, I think that the choice would have remained ionic.
Even react-native isn't ready yet if you're a windows based shop. But maybe that's come along in the last couple months too.