Tough to find anywhere that will let you win consitently live betting. They immediately assume you have some technological or information advantage as "it should not be possible" to beat the markets consistently. Partly due to high over round and partly due to the high variance of betting non-mature markets.
For example, Australian regulations include some provisions to allow anyone to bet to win up to $1000 on some racing events. But in practice that just sees more players refused service totally than actually allowing anyone to bet that much.