You can’t make a rule in a game that pertains to things outside the game. That’s not a game rule. That’s a metagame rule. “No killing the other players.” is not a rule in any game I can think of. “No smoking crack on the field.”, I’ve never heard of this rule in a game. Bribing the other players to lose has long been understood as a “dishonorable” and “unfair” practice, but I challenge you to find it in the rules of any game. The EULA and TOS do not exist within the game of EVE Online and violating them is not breaking the rules of EVE Online. Violating them is a breach of the contract that you are a party to with CCP Games.
The whole point of metagaming is to gain advantage, rules of the game be damned. Sometimes that means you obey the rules to avoid the consequences of breaking them. Sometimes that means you break the rules and endure the consequences. Sometimes that means you break the rules and avoid the consequences. Sometimes you can “violate the spirit of the rules” without technically breaking them. Sometimes you can operate in a gray area where the rules are unclear or even explicitly, intentionally absent.
Saying “This is a bannable offense.” or “This is a capital offense.” says absolutely nothing about whether or not it should be done, from the metagamer’s perspective. Rules don’t matter. Only the objectives and the available means with which to achieve them.