At the very worst there is always a bit of onehash putting money to both sides when they are listing something on their website so it is never really zero. However it is close to zero, so you are not getting anything if you have nobody putting money on the other side. That has been one of the biggest challenges this website has seen as well, they are having trouble finding people to wager on both sides of every single bet.

Look at the most important games, there is ALWAYS someone putting money on both sides, for example lets say we are in regular days and there is el classico going on, someone will put money on Madrid and others would to Barça for sure, there will be a lot of money, yet lets think real sociedad villereal playing a game, you may not find anyone to wager on that, you MAY find someone wagering but more often than not its gonna be zero.