Slobodan, you are ignoring the direct connection between shorting the pound and getting campaign funds to the tune of many zillions from people/companies doing just that. Do you not get it ...
Rob,
1. Your "lemming" reference, to which I was responding in the part you quoted, was in relation to a totally different issue, nothing to do with shorting. Check your own links, it was in respect to annual capital gains distribution, typically required by law, among the partners of the investment fund.
2. As for shorting, seeing an investment opportunity and pouncing on it is what investors do. Since shorting the pound is such a no-brainer, no one stands to win much. Betting against what everybody else expects, however, is guaranteed to deliver a huge win (if the surprise happens, of course).
The way shorting works, the more likely the shorted event is to happen, the more shorting contracts become expensive. In the end, while you might win the prediction, you paid a high price for it.