[claudiulodro]

FWIW I imagine 95%+ of it is warehouses and fulfillment centers, not necessarily office space.

[dangerlibrary]

Maybe 95% by square footage - probably not by $$$.

[Detrytus]

Why would they invest in the office space for rent? It's not their core business, just a distraction. They might own their own offices, but that should be really tiny, by square footage and by $$.