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I attack with a Red Dragon instead of taking the scouted Utopia... I find out from him that he wants to achieve Tech-Lizard, because of this, I concede the victory, as I no longer intend to play with him.

As far as I know, you were playing for money. And therefore, it's foolish to expect fair play. As Vysotsky sang, "Be a gentleman if you're lucky, but if you're not, there are no gentlemen."
Goal: to win by any means.

Example: A long time ago, I played a series of chess games with a classmate until a certain number of wins were reached. My opponent's skill level was slightly higher than mine. We played 15 minutes per game. In one of the games, my opponent forgot to press the clock after making his move. I pretended to be thinking. When the clock started ticking down, he noticed and pressed it. As a result, I won the game with approximately equal chances, as my opponent's time ran out.
P.S. He won the series.:)