It doesn’t mean that at the end of 1 million hands that 500,000 will be the banker, and 500,000 will be the player. It means that the more hands you play, the closer it will be to the statistical norm (50/50).

Of course, in Baccarat, Banker has about a 1% hands won percentage advantage due to hit rules. This translates to 46/100 hands (ON AVERAGE) are won by banker, and 45/100 are won by player.