I would go so far as to say that it is an almost certainty that we will find out that life started many times, oth here and on other worlds.
The chemistry seems so straight forward and the likelyhood of creating life so probable that I find it hard to believe it happened only once. My best guess is that life is probably been created as we speak but that unless it happenes to begin where there is an open niche it would simply be short term protein, dinner for whoever was already occupying the niche.
Aslan is not a Tame Lion