For instance, buy an index with a low maintenance fee that tracks the REIT. It's also a lot quicker (and easier) to get out of that index fund than it is to get out of your home. https://personal.vanguard.com/us/FundsSnapshot?FundId=0123...
The key is, you can invest in real estate without owning a home and better still: be diversified into multiple kinds of real estate. A home is a very homogeneous investment vehicle. Think of it more like a savings account with a maintenance fee but you can live inside it.
That throws the calculation way off, because you don't get the tax benefits associated with buying and living in a house.
Money flows, tax breaks can decrease the viscosity of that flow.
There's more than one way to play the game. :)