[dathinab]

It doesn't because the people most affected are not the main customers!

The further the negative affected is "away" from the one who gives direct marked feedback the less does marked self regulation work.

Similar the more the negative effect is subtle affecting people often in a non-obvious roundabout (but potentially still massive) way, the less does free marked self regulation work.

Which on our modern Globalized, hyper Complex, high tech World means:

It can't work well, potentially not at all in some areas.