Another thing to factor in: the cost of your time to evaluate the idea. If there’s a sufficiently strong probability that it won’t work (for example, because the idea obvious enough that it almost certainly will be done by someone else if there’s sufficient expected value), then the time required to evaluate the idea can dominate the evaluation, especially since the time could instead be used to evaluate other entrepreneurial ideas in domains that you have a comparative advantage in.
Another thing to factor in: the cost of your time to evaluate the idea. If there’s a sufficiently strong probability that it won’t work (for example, because the idea obvious enough that it almost certainly will be done by someone else if there’s sufficient expected value), then the time required to evaluate the idea can dominate the evaluation, especially since the time could instead be used to evaluate other entrepreneurial ideas in domains that you have a comparative advantage in.