This question is silly. You can find business opportunities, jobs and romantic partners by pure chance in any social situation. If you're trying to find "tangible benefits" by asking people "did you find them by hanging out here?", you're doing it wrong. The people here are intelligent and have widely varied experience. They discuss topics that are of interest to me, with minimal BS. That's it. That's the benefit
It's also the reason why founders have an enormous working drive, most of them fail, while VCs of course are the ones laughing their way to the bank.