Yeah, 400 million years.

We are already into the mass extinction event caused by humans, the hardship for biodiversity is measured in millions of years in event we give nature back the space.

And three are no plans anywhere about that.

The hardship for humans seem irrelevant in comparison, if we have a war & kill 4 billon people that is still a 50 year setback (1975).

Also even if human population is starting to level (geopolitical prediction still point to 12bn, it’s more about the economy & living status), we will each year consume more of everything, space/surface included.