My personal theory is that the conditions for life are plentiful in the universe but it probably took an unbelieavable number of random chemical/mechanical events to form the first proto-lifeform.

    The discovery comes after these building blocks of life were detected on another asteroid called Bennu, suggesting they are abundant throughout the solar system.

> Yet actual life remains to be discovered...

We've barely started to look, other than on Mars, and notably we are seeing possible signs there. There may even still be primitive life there.

If we do find life of Mars, or say Europa, i.e. in the very first places we look for it, that that would be highly suggestive that it is extremely common (at least in primitive form).

Also it seems that finding a balance where an ecosystem doesn’t kill itself with its own waste is probably harder than we assume. Earth life has totally changed the atmosphere of the planet, I would many it many cases even when life does for it kills itself early on