That's interesting. I didn't know that. I always thought the three foul rule exisited instead of allowing for a stalemate.Here is the rule in 9 ball:
2.9 StalemateHere are all the rules: http://www.wpa-pool.com/web/the_rules_of_play
If a stalemate occurs the original breaker of the rack will break again. (See 1.12 Stalemate.)