I struggle to understand why gardens have been 'allowed' to be paved over and hedges 'allowed' to be replaced by walls.
I doubt the next generation could find it in their hearts to fuck up the environment any more than has already been 'allowed' and exploited and capitalised upon.
Restrictions could be reasonably modified to permit minimal impact dwellings and as such your dark and dismissive assumptions would not necessarily prove to be true.
It is a profit protecting racket on many levels. The contemplation of change does though continue and such thoughts and discussions might prove purposeful in redistributing wealth.