The lack of clear title to property in Egypt (and probably many traditional societies) is indeed one of its biggest problems. There was some suggestion of creating a massive legal project to aid people in getting title to “their” property, or possibly even some sort of government declaration awarding title to certain lands as a starting point.
One of the other problems is that we are seeing only Cairo and hearing only about its problems; most of the rest of the Egyptian population is rural or lives in smaller population centers, and these problems are even more acute there.
If anyone thinks that private property ownership will be any more clear or secure under the Muslim Brotherhood, they are delusional. Poorly educated people with no private ownership are much easier to control.