What happens when we understand that the evidence does not point to some single LUCA (last universal common ancestor), as some scientists already are suggesting?
TTBOMK, there is nothing that would exclude there being more than one common ancestor. Life could well have started multiple times. If we ever found evidence that life had started more than once it would change very little.
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.