Especially the latter graph from this report clearly shows that iOS is in such high demand, that there is far more job ads out there then there are iOs developers.
Taken from StackOverflow Hiring Trends
Our choice to use ionic was based on all of those, and since we are building all our apps with ionic.
Of course, ionic is not the only option for companies to build mobile applications with the need for iOs / Android developers. ReactNative is also widely supported, and the benefit is that it’s a real native app, not an HTML5 app, so there is no need to compile. A lot of the big tech companies use React or ReactNative, but for developers it seems to be a difficult choice. It might be too early to decide.
In another light, if a company does get the right iOs / Android developers to build apps, this will be probably be the most solid choice. Ionic relies a lot on an open-source community of developed Cordova plugins, and for a big scale project this might be to much dependency.
There is always discussion those topics in the programming world what is the best to use, but in the end the business aspect is just as important, don’t you think?