It may not be an entertainment programme, but it is competing with them. A more interactive, less static production is likely to keep viewers watching rather than turning over - it’s a psychological thing, if someone is staying still then there’s a sense that even if the news subject changes the experience is still the same so people don’t think they’re getting anything new, but if someone is moving around then you’re following them with your eyes and there’s more of a sense of urgency and that you might miss something if you switch over.
The way people consume media and even the way people’s brains work has changed dramatically over the past two decades - it’s not that the old format doesn’t have its merit, it’s that it just doesn’t work for modern audiences.