You see it to some extent on regular sites when browsing on mobile. Like if you go to Crunchyroll on safari or brave on iOS and try to stream a video it refuses to and tells you to download the Crunchyroll app. It is capable of streaming it though, since I can do so in Safari on Android.

So imagine that but more ubiquitous which locking out specific devices or refusing to let you login in a bank account by saying please download chrome or edge to access due to requiring DRM.