> Why do companies want an app?
It's not for telemetry (at least at the scale/size of companies I deal with). As far as I can tell it's the prestige. I know this because our initial app had no push notifications and the clients who paid for it wouldn't stop asking about an app and didn't even touch the (identical) web version.
Push notifications are part of it for sure but I just wanted to give an example of a case where there were no features that were app-only but all they cared about was the app. I'd say "Yeah, we have that new feature and you can see it at yourbrand.ourcompany.com" and they'd say "Ok, when will we have an app?", felt like I was taking crazy pills but I've seen this exact same conversation repeated at multiple companies, multiple clients. And lest someone thing this is a subdomain-related thing, it's not, I had the same questions when we setup the web version at theirdomain.com.