Pinno718
Guru
I don't really understand gambling/bookies but I had the (maybe incorrect) impression that their odds are based on who is placing bets which way. ie to hedge their bets whatever the outcome.
So, if my understanding is correct are they more than a type of poll across those who gamble on such things ... a very specific sector of the population?
Or maybe I don't appreciate how bookies set odds (quite possible).
The more people who bet on Horsey x, the more the odds shorten, which effectively reduces risk. Now, Horsey x might not have a snowflakes chance in hell of coming in but the more people who bet on Horsey x, the greater the risk that snowflake represents.
1 person betting £50 on a 1000-1 chance risks £50k. 100 people betting on a 5 to 1 chance averaging £10 per bet is a liability of 100 x £10 x 5 = £5000. The 5-1 doesn't stay at those odds because the risk is too high so the bookie reduces the odds so that mathematically, the winning bets cannot exceed the total of bets placed on a single event/race or else they cannot run a business.
If you want to know more about spread betting, accumulators, fixed SP's, systems and how the bookies pull people in and how to beat them then let me know

But... I only know about Horse Racing.