If all of these decentralized identity companies truly want an open and self-sovereign system, the big question is: are they willing to shutdown their operations once that is achieved?

Or are they all attempting to monetize identity with various business models that are against the stated goal?

Identity should be owned by the individual, and the universal decentralized/distributed identity protocol should be owned by the commons. Any for-profit business model for identity (90% of the member companies) will inevitably seek to silo and exploit data to achieve monopoly and extract economic rents.