I think some of them do try to monetize by stacking the instance with influencers and then locking account subs. People try and get the handle of the instance. So far I can only think of one that could be doing that and it's just my suspicion (I don't care enough to confirm).

They don't always want to come to Hive. I had a chat with one to whom I offered a Hive account but he didn't want to monetize his content. He figured his writing (which was of excellent quality) was not good enough for monetization.

We currently have most of @Neoxian's "city" on dline but not everyone posts. I try and get people from all over the world so we can get some interesting discussions going. It helps to see the posts at least and they do get shared out. The Hive instance is the only one that I can think of or I've come across so far where we have people write in languages other than English. I'd like to see that broadened since so far its mostly Spanish that's used. Hive is global and that should carry over to our supporting communities like dline.