Indeed. There are whole investment industries built up around property, reinsurance etc etc because they do diversify. The risks are relatively uncorrelated,

Indeed. There are whole investment industries built up around property, reinsurance etc etc because they do diversify. The risks are relatively uncorrelated, so the returns are too. Honestly, this is a PR/opinion piece designed to get coverage - and that's fine. I'll bet you good money that there are opposing views on the 20 year outlook from different investment experts though.