> To still allow for competition, you define a base feature set and representation, and then you allow vendor extensions. You need some sort of standards body that can promote vendor extensions to standardized, supported things. And clients can choose to support whatever (or no) vendor extensions that they want to.

Right. The problem is in the first step. The moment a consumer likes a vendor extension and begins relying on it, they are locked in until the standards body gets around to standardizing it. So all this cooperation to pick a standard and maintain it, and consumers still end up locked in because they like certain extensions more than others. And software providers for consumers still have to write individualized support for all the providers to in order to manage all their extensions.

So all these cycles went to building a standard, and where's the actual win? We still have handlers customized to individual providers. We still have consumers choosing to rely on singular providers.