"Having investments in commercial real estate" isn't sufficient explanation on its own, IMO. It's certainly true that a lot of executives have commercial real estate investments. It would be weird if they didn't, because real estate is a pretty common thing to have in an investment portfolio. But those investments are going to be diversified across a bunch of commercial real estate, little or none of which has any relationship to the executive's company (because otherwise it wouldn't be very well diversified).