My family where bookies going way back as a 7 year old I used to collect bets from various workplaces around. These where the days when off course betting was illegal and I could get the bets back to my grandad. I was by ten able to help sort out winners and take them back.
When you bet you are not betting against the bookie, you are betting against your fellow punters.
I learned very early. ..
A poor bookie is the one who has to clean his own Daimler