Compare OpenAI and Anthropic as two different buying choices: a broad default platform and a specialist system for higher-stakes work. The lesson looks at distribution, governance, switching costs, and lock-in, then asks students to recommend a simple two-part AI stack for a real workplace Activities include: business reading, reading comprehension, business case studies, case studies, business conversations and conversation practice. Grammar focus: Would for habits in the past and Used to. Business skills: Strategic Thinking, Vendor Selection and Technology Governance.