Paid bicycle locks
Quicky: there are not many places where you can park your bicycle. That is, there is space to park your bicycle, which people do, but it’s definitely not marked as such.
On the other hand, sometimes there are places that are designated as parking spots and then you can store your bicycle in a clamp, which doubles as some kind of lock. A chain lock if you will.
I noticed that almost no bicycle is locked with an additional lock, let alone securely attached to immovable objects. But maybe that’s not necessary when every bicycle is explicitly registered…