i always wonder
this is how capital market works
when a demand for a certain location gain too high for the supply to catch up
it means the certain location has reach its intended targeted thresore for development.
it will be wise to send the population to another adjacent location to develop there instead, and when the cycle repeats again, its time for greater KL to become a greater selangor.

and then slowly once the location center reach a certain economical and development thresore, it will start to slowly decline or become something else completely.

Those location you mentioned are slowly declining as well
Next one should be puchong kinrara equine park