Be careful with that thinking. That way can lead to complacency. Big tech loves embrace, extend, extinguish

I could see a corp like Microsoft or Google or someone else seeing long term value in federated services. They could create a service utilizing the technology and spread it to their user base. Slowly add in some special sauce to their own version of it to attract more people to their part of it. Then break compatibility with everything else to stop someone from stealing users back.