You used to have to pay for the IPS chat and, per amount of users, you wanted to allow.
I suppose IPS could figure a way to charge self-hosting clients for bridging into their resources, so that features like this would work. That's not going to drive people into cloud storage though, which I get features like this does. Could the live topics be worked into self-hosting, with the option of using third-party services like Facebook live or Youtube? Most likely. @Michael.J has an excellent recourse for live topics. The UI of this sneak peek could perhaps be similar to that.
Then again, could a third-party app be made to be similar to this? That's a possibility, even if its dumb downed or made to be simpler. Provided developers don't have to jump through hoops, just to please us self-hosting clients.
Regardless though, it's going to be for cloud hosting customers - to which I would echo my comments about keeping both sides of the fence happy.