your title doesn't make any sense. bitcoin didn't join anything, it is as it has always been. it is the banks that are now slowly changing their stance because they have realized their FUD didn't go anywhere or do anything.
So i guess as my opinion on bitcoin future will be stable and no coin will take over it.
so you needed a bank to start offering its service to another centralized service (ie. exchange) to make this conclusion?!!!
I thought as much, sometimes the title that members of this forum give goes in one way and the content of the post is also in a different direction. This makes it very difficult to follow up and build decent conversations in here.