Yes, "Copilot" is not the first brand that MS has tried to stick to everything while being just as confused about it as (inevitably) the consumers. Although somehow they did manage to keep .NET mostly aimed at developers - besides the actual frameworks there's Visual Studio .NET and other dev tools, but I'm actually a bit surprised that they never had "Office .NET" or "Outlook .NET" or even "Windows .NET Edition" or something like that. Maybe they still had some sane people in charge of marketing and brand management back then.

They did brand the Microsoft accounts themselves, from “Passport” to “.NET Passport” for a while. That was before they were “Windows Live IDs.”