Because the system is not working well enough on scale. People manipulate it for various reasons and use it the wrong way. At the end, there is more damage than

Because the system is not working well enough on scale. People manipulate it for various reasons and use it the wrong way. At the end, there is more damage than benefit. The same happens at other platforms too, and they all are experimenting with alternative solutions for this problem. But so far nobody seems to have found a good solution for this. I would even say, it's unsolvable, because humans.