"In the circular economy, we would no longer own products, but would loan them. For example, a customer could pay not for lighting devices but for light, while the company remains the owner of the lighting devices and pays the electricity bill."

I think it's aspiration but it's a long way off and human nature and society would have to radically evolve before it occurred. It's also a feature all economies should be moving towards. There should definitely be this move to reuse and increase longevity of products and stop making a mess. For it to be "the" economy right now, you'll probably want to learn how to reprogram the brains limbic system 😉