If someone answered no to the other question, that would mean: "No. I do not regret taking investment." If they said yes, it would mean: "Yes, I regret taking investment."
If somebody answered no to this question, that would mean: "No, I do not regret not taking investment." If they say yes, it means: "Yes, I regret not taking investment."
I'm having trouble understanding how it's the same question. Yes, the first answer to the other question was someone saying that they regret not taking investment. That didn't actually answer that question. It was really an affirmative to this question, which was partially my motivation for starting another thread, along with just comparing responses and covering all bases.