That's a bad analogy you made. Copilot is a Product Platform, Save is a basic software function that even my grandma could explain what it does. You don't have to believe me, test it yourself: Let your grandma explain what save does in Microsoft Word or Excel. Then let her explain what Copilot does in Outlook, VSCode, Bing, Github Copilot, Bing, Sharepoint, Microsoft 365 and so on..