This. Amazon no doubt has reasons to buy land that it _might_ want to use for warehouses, etc., but they are also just stuffing money into real estate because

This. Amazon no doubt has reasons to buy land that it _might_ want to use for warehouses, etc., but they are also just stuffing money into real estate because it's an inflation hedge. The very beginning of the article admits that they were in competition with hedge funds for some of their purchases.