there's more to it though. Real estate doesn't "expire" like grain. It can be repurposed, but it would require some capital investment.
As an analogy, the grains could be fermented and turned into spirits.
And as an addendum, the value lost in the commercial real estate could be potentially considered as transferred - let's say a business either gets a cheaper rent, or stops renting offices (after this is why these commercial real estate valuation is lowered), then those businesses saved money and thus that money saved is what got "transferred".