Our site is for questions about Ethereum that have objective answers. Mostly they will be technical questions, since Ethereum is technology. But there could certainly be other questions that could be about economics, game theory, law, etc that are about Ethereum. Some of them may need to be evaluated on a case-by-case basis and some of them will probably be on-topic. A key factor in the evaluation is does the question have objective answers? If it does, it is probably helpful to have on this site. But if the question's answers involve arguments about economics and law, it is more likely to be off-topic and belong to another site. Especially if a question's answers depend on speculation, such as legal questions where there are no precedents and so answers are primarily opinion-based.
Ultimately, it is up to the community to decide how to deal with the case-by-case questions. (Moderators should try to avoid using "super-vote" to close or reopen questions that have been acted on by the community, unless the question clearly fits in the guidelines.)