I'm wondering how this could be profitable for people?

for example:

1 SPC = 1 Prediction

1 SPC Bundle : 79$

this means that the person will have to pay 79$ for you to predict a game for him, that person will have to have at least 200$ to bet (200$ to bet + 79$ that you paid = 279$ spent), because you probably you will choose a game in which you have an odd of 1.50, in which case if you got it right, the person would have 300$ - 79$ that he spent on you, paying that person will have 221$, this person's profit will be only 21$, that is, for that person to make a bigger profit  will have to bet a high amount and you will be taking a high risk because he is trusting you, and if you make a mistake in the prediction that person will lose money, but you will never lose money even when your clients are losing you will always be profiting.