People on the thread seem to be assuming that if wealthy people were allowed to buy these additional places then they would still have to get the grades etc appropriate for the course.
Why do people think that?
Surely if they got the grades they would go there under the usual system like everybody else, for a tithe of the price.
The point of this, surely, is that wealthy parents will be able to buy places for their offspring who are not able enough to get in via the usual route.