Article 16 enables the Commission to open a market investigation. Article 17 sets the investigation route for designating gatekeepers when Article 3 thresholds are nearly met but evidence of qualitative gatekeeper position exists. Article 18 sets the investigation route for systematic non-compliance with Articles 5-7. Article 19 sets the investigation route for new services and new practices, with the possibility of extending Article 5-7 obligations to other CPS-like services.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.