Without knowing too much about it I always thought the "Chat" feature provides a pretty strong lock-in.

> When I started in 2002, we only had Bloomberg Messaging, which allowed users to simply static message each other within the Bloomberg ecosystem. I think it was maybe 2004 that Instant Bloomberg was introduced and began to write the book on product stickiness.

This old blog post talks about this a bit: https://medium.com/the-edge-ai/i-only-date-guys-with-bloombe...