First, government id has a very different ring here, than in the us. It's not that different from a name or a face. It's not s big deal. Almost anytime there's any need to be recognized formally, the government id is an easy way to do it.

We don't really use "all names and addresses you've had the past 5 years" and all that.

So think about any app, where you need to id yourself better than just an email adress or phone number. It will be all of those.

I have an app to access my medical record. Nobody accesses my medical record without identifying themselves, in a trustworthy way.

My bank app, with access to all my financials, including pension funds - same deal.

There's a payment app that is very popular here, the kids uses it too. It requires id. That id solves some issues that could have been solved in other ways, but since id is no big deal here, that's the easiest solution by far.