So although we may never know the exact conditions under which abiogenesis occurred we can nonetheless come up with scenarios that show it is possible. But even if we find such a scenario it doesn't mean that it actually happend that way. Afterall it may have taken an other pathway but at least it would have been demonstrated that it is not chemically impossible. Of course it may require a chain of very unlikely events but this doesn't mean that it is impossible or that it needs a very long time to happen. An event with low probability may occur in the next five minutes or it may take ten gazillion years until it happens.