In a proposed merger that regulators must prevent, Uber Technologies is trying to acquire Grubhub for $6 billion. Grubhub competes directly with Uber subsidiary Uber Eats. The combined firm would control slightly more than half of the third-party meal delivery business. Both sides talk of synergies, and improved platforms and logistics. In the end, consumers will have fewer choices, will pay more, and restaurants will get less. Allow healthy competition.