Adjustment : Game theory

I would like to make a few clarifications to the theory of non-zero-sum games.

Game theory made it clear, that there are zero-sum games and none-zero-sum games. My theory of economic relativity must question the portion of non-zero-sum games.

Consider the following example (from Wikipedia) on the prisoner's dilemma

"This problem well modeled issues of tariff policy: the competitor who lowers its prices to gain market share and thus can increase its sales and possibly increase earnings, but if its main competitor does the same, both can lose."

Actually, yes, both can lose, but someone has to win, so it's a zero-sum games. In fact if the statement is none-zero-sum was true, my theory would not hold since it is impossible that the result is non-zero-sum. The theory of economic relativity € = MC2 or € = E must respect the law of Lavoisier: "Nothing is lost, nothing is created, everything is transformed. "

Therefore who wins?

The winners in this equation are the consumers. If the 2 merchants lower their prices, consumers can work less to fulfill their consumption needs.

The third player, the consumer, was a silent player who participated unintentionally and he is the one who will benefit, or scoop, the result.