Applied to a job at a company twice in 2 years, both times was offered a second interview but the internal candidate was selected

What’s the point of an interview then? Why bother checking twice? Don’t claim it’s a difficult choice, yet choose the candidate the company doesn’t need to onboard. 🤷‍️ Why bother telling people they are the right candidate and keep their hopes up for nothing? (Not my story, just of someone I know. I’ll probably will face the same issues soon) How do you as a worker overcome this sort of time wasting? Do companies just like to have interviews for fun?