The problem seems to be that life is a long time and most people who invest want to see returns in a short time. I guess banks could do it, but it seems unlikely that they would be the one to start.
I once met someone who claimed to be an entrepreneur and said they would be a mentor to promising entrepreneurs for a promise of equity in everything that entrepreneur did for his life. It sounded a bit ridiculous to me at the time, and it sounds even more ridiculous now that I know more about investing.
Most people want returns in a short time does not mean all good investments make returns in a short time nor does it imply all good investors look just for short term returns.
I once met someone who claimed to be an entrepreneur and said they would be a mentor to promising entrepreneurs for a promise of equity in everything that entrepreneur did for his life. It sounded a bit ridiculous to me at the time, and it sounds even more ridiculous now that I know more about investing.