How do you know they didn't try....your just assuming they didn't try, and even if they didn't maybe they know better than you and know what type of games would have the best possible chances of containing an exploitable flaw, usually games with user generated content offer the best attack surface so would be the obvious choice for searching for exploits
Basically unless you want to do better don't bother crying that devs don't confer with you before making exploits as to which game will suit you best