Yes, Houses and estates increase in prices everywhere in the world, so if somehow there is a crash in the industry of some country, we simply invest in another where is a rising or in a healthy position, it will always rise somewhere, so we have a safe place to hold investments, because REAL work internationally, not just one country, where the risk to recuperate from a crash is very high.
Except that to invest in a new rising object you need either to sell an old falling object at a loss, or put in new money. As with every investment, selling at the right time is how you make money.
For each property they buy, they will have a certain target set. Like sell it in two years with x amount of profit. Right now those goals are set by REAL themselves. I'm hoping in the future that ICO participants will be able to vote on these targets, perhaps by using REAL tokens.