Reading up on this, it sounds like Copilot adopted the methodology that Cursor has been using internally for more than a year. Which is great, but if your quest

Reading up on this, it sounds like Copilot adopted the methodology that Cursor has been using internally for more than a year. Which is great, but if your question is "why is everyone using Cursor?" it is because many initially used Cursor when they were the only ones with this feature. I, for example, specifically switched from Copilot on VSCode to Cursor because of the spooky accuracy of Cursor's tab complete compared to Copilot, at the time. This was only a few months ago.