If you play in a tournament, it has nothing to do with capital, because all chips are divided equally among all participants, so far, that's what I know and I quite often participate in tournaments, skills and experience are really needed as well as patience too
Playing in tournaments has nothing to do with bankroll or capital because these factors are not what plays the game to victory, but what is in function here is your skills, experience, and tactics deployed to play the games. Your funds are just a gateway to you having access to the tournament, and that does not guarantee a win for you if you join the table, but you will have to use your skills because all chips are shared equally amongst the players for a start.