on what the Buddha taught
In AN8.3.9 (Akkhaṇasuttaṃ) we find people thinking the world had a chance, an opportunity, to benefit from the awakened one, because he was then there in the world.
But we find the awakened one stating people mistake his being then there in the world for an opportunity. Even with him there, those in hell can't benefit from the principle being made clear, or animals, or some certain gods, or those living to far away, or those close enough but with to strong wrong views and to confused, or those simply to dumb to understand. For those it is a miss.
There is also the case when a person is capable but the principle has not been made clear, then too it will be a miss. Thus with the principle made clear don't miss out on the opportunity; study from the sermons so once in a while.