That's what guarantees that people will keep buying tickets as long as the odds are in their favor.
( That ( ( 's ( what ( guarantees ( that ( people ( will ( ( keep ( buying tickets ) ) ( ( as long ) ( as ( ( the odds ) ( are ( in ( their favor ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT That)) (VP (VBZ 's) (SBAR (WHNP (WP what)) (S (VP (VBZ guarantees) (SBAR (IN that) (S (NP (NNS people)) (VP (MD will) (VP (VB keep) (NP (NN buying) (NNS tickets)) (ADVP (ADVP (RB as) (RB long)) (SBAR (IN as) (S (NP (DT the) (NNS odds)) (VP (VBP are) (PP (IN in) (NP (PRP$ their) (NN favor))))))))))))))) (. .)))
People will continue to buy tickets if the odds are not in their favor.
( People ( ( will ( continue ( to ( ( buy tickets ) ( if ( ( the odds ) ( ( are not ) ( in ( their favor ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS People)) (VP (MD will) (VP (VB continue) (S (VP (TO to) (VP (VB buy) (NP (NNS tickets)) (SBAR (IN if) (S (NP (DT the) (NNS odds)) (VP (VBP are) (RB not) (PP (IN in) (NP (PRP$ their) (NN favor))))))))))) (. .)))