It can be easy to get caught up in the trees of day-to-day investment work — capital calls and quarterly results, deal making and committee meetings, the movement of 25 basis points — without pausing to look up and see the forest. But there are deep underlying themes that can affect the investment landscape for years to come and sometimes cause seismic shifts in how real estate is used. The following takes a look at six of them. Savvy investors will be watching these megatrends.