Yes it does happen. Yet don't let it make you leave. If you don't lash out they move on and anyone can do just fine.
They are few in number (handful) but very powerful. Though the system allows it so WHEN things explode (which I expect they will) and a ton of people join I suspect some people might spend money and power up and we could have more of these, and we could have people that spend money to power up and counter them.
It is also possible the new linear voting curve that is coming will help with this quite a bit.