The world is far bigger than most realize. Split completely equally there's enough room for more than 200,000 square feet per person. [1] Thats about 4 football fields of area for every single man, woman, and child alive today.

Factor in that some people enjoy living in urban areas, most won't leave in any case, and so on - and we're realistically talking about tens to hundreds of football fields per person. It's a big world out there.

[1] - https://www.wolframalpha.com/input/?i=land+area+of+earth+%2F...