Normal investors lack the ability to invest in real estate the same way that wealthy investors do. It's nearly impossible for you and I to invest in a new office complex or similar. So normal investors are stuck with the housing (usually in a single market), existing small commercial, or REITs. Houses are fickle and gains are mostly due to luck (or volume). In my experience, yields on affordable commercial RE are not that far off from broader market yields.
Also, in the near-term (~1 years), you may see dramatically falling home prices as people lose their jobs and the supply of buyers dries up, and you may have difficulty collecting on rent with all the rent strikes going on and tenants who do not have the ability to pay.
Long-term these problems should work themselves out and real estate (particularly in hot coastal metros) should start going up again, but 2020-21 is going to be rough.
