I haven't even heard of the other ones listed in the article.
You get water for free* from your tap but that didn't stop marketers from convincing everyone to pay $2 a liter or more for it.
Good for Newmark for taking the road less traveled, I doubt they are in danger of losing their crown any time soon.
(It seems it'd be surprising if there weren't seasonal effects, eg, students looking for a place to live. I almost feel like you can see a peak each July -- I probably do really have apophenia here.)
When I go to Craigslist I see the same familiar, endearingly cluttered interface that's been there since I was in my teens. The search bar is conveniently located up top, it's fast, and it works. When I go to one of their competitors I see a bunch of corporate logos and some bullshit like "Experience an open marketplace powered by Vast." You're telling me this is better? Oh wait, it has check-in!