...the difference is in the 'probability' of the success of your
outcome and the 'payout' if you are right.
... in those games where the probability of a win is higher, the
payout, compared to the bet is so low, it is not worth the bet.
Because no matter how certain the results appear to be, there are
always unforeseen circumstances and if you consider the payout in
relation to the amount you bet, it is just a waste of time and you
will lose, eventually (even if you win initially) with mathematical
certainty.
... in the stock market... you can wait until the prices are in
your favor to sell.... you wait until the results are in your
favor..
In Soccer betting, your know the results of your bet after the game
is over.... the result is forced on you...
