It was the other way around. Several exchanges publicly went all-in on various Bitcoin forks, only to turn around on them when all users and economic activity stayed with "regular" Bitcoin.
Many prominent people predicted the mainline Bitcoin chain dead when so many important exchanges and custodians promised to change the consensus rules. In retrospect it may sound like empty threats, it doesn't make much business sense to go up against economic activity, but at the time it was considered a real threat.
Many prominent people predicted the mainline Bitcoin chain dead when so many important exchanges and custodians promised to change the consensus rules. In retrospect it may sound like empty threats, it doesn't make much business sense to go up against economic activity, but at the time it was considered a real threat.