Originally Posted by
markandsmoke
There's PP members always camping outside the lounge even when its empty...
If by "camping out", you mean standing in front of the elevator, studying the sign, and debating whether to go upstairs, feign ignorance and attempt to talk their way in...then, yes.
Originally Posted by
markandsmoke
...so that means that they are just doing PP for extra revenue...
Just like every other airline/contract lounge or restaurant that participates in PP. If you're in business, you look for ways to increase revenue.