I want to know the answer to the following question:
What started competition between families for wealth?
All the background I'm provided with is that "However, evidence of social inequality is still disputed, as settlements such as Catal Huyuk reveal a striking lack of difference in the size of homes and burial sites, suggesting a more egalitarian society with no evidence of the concept of capital, although some homes do appear slightly larger or more elaborately decorated than others.". Is that enough to answer the question?
Answer: no