Actually it's obvious for profit but..
Let's not forget the various angles of it all..
A rich guy can pump a coin and there will of course be older users with "cheap coins"
waiting for a pumper to come along and inject cash into the coin markets.
That will then be their green light to DUMP ON THE COIN PUMPER !
It's all a predatory little game of preying on someone before you get preyed on.
It's not only the Pumper that is the evil doer..
The vultures are in all positions in the system capitalizing from different areas.
If i bought BTC at $1,000 a coin.. then it gets suddenly and swiftly pumped to $1,500
I would almost certainly dump on the pumper and his tag-alongs..
Then i would simply wait a while for the price to tank and buy my coins back cheap.
I know that works because i have done it lots.
Oh and..
I thought of this because i know of some coin guys who have been here since 2012 waiting.. still