> But the end product is notably worse than native interface.

That was my point - a lot of superior products were eaten by poor bundled replacements.

Last I checked, copilot has more users than ChatGPT simply because users are using it from within Excel, Word, Outlook and Teams, without even knowing that they are using copilot. It's bundled into Windows.

Right now, copilot is more useful to users than ChatGPT because it is embedded into their workflows.