> If you were a landlord managing an apartment building, how much do you charge for a unit? If all of your tenants suddenly make twice as much money as they did, how long before you double their rent?

Remember, your tenants are now able to move to gentrified areas, their wages allow that. Some might want to get a mortgage for a house they could not dream of previously. So now your apartments will have to compete with much wider selection of property. You'll raise prices definitely, but not as much as you would think, and you'll spend most of the difference doing renovations and spending on security.