There is life deep within the earth that will likely survive no matter what happens to the planet. The sun could fade, we could nuke the surface, have an asteroid completely resurface half the planet, and microbes will survive and eventually recolonize the entire world.
Not that we’d want a mass extinction of so many unique and beautiful things, but it is a comforting thought to realize we can’t really do anything that would render earth entirely devoid of life. And even if everything we know was lost, life would rise again to reclaim the rubble.
There’s never been anything to test. A tool created for commercial purposes has never not been serving shareholder interests over society. And, those two interests are largely mutually exclusive.