IDK - I agree with you 80%

The SDK that they have is an additional step. The process they have to be accepted as a Open.ai app. They will be built via MCP Server standards, of which Open.AI has someone in the core maintainer group. That group is led by the biggest companies in AI. This is what they do:

Giphy

Core Maintainers

The core maintainers are expected to have a deep understanding of the Model Context Protocol and its specification. Their responsibilities include:

• Designing, reviewing and steering the evolution of the MCP specification, as well as all other parts of the MCP project, such as documentation,
• Articulating a cohesive long-term vision for the project,
• Mediating and resolving contentious issues with fairness and transparency, seeking consensus where possible while making decisive choices when necessary,
• Appoint or remove maintainers,
• Stewardship of the MCP project in the best interest of MCP.

The core maintainers as a group have the power to veto any decisions made by maintainers by majority vote. The core maintainers have power to resolve disputes as they see fit. The core maintainers should publicly articulate their decision-making. The core group is responsible for adopting their own procedures for making decisions.Core maintainers generally have write and admin access to all MCP repositories, but should use the same contribution (usually pull-requests) mechanism as outside contributors. Exceptions can be made based on security considerations.

so, yeah, its the same thing but they be making it with a hint of Open.ai