Final answer:
De Beers' investment in CVD technology and established infrastructure relates to Porter's 5 Forces and represents high barriers to entry, deterring the threat of new entrants in the synthetic diamond market.
Step-by-step explanation:
The discussion regarding De Beers' use of Chemical Vapor Deposition (CVD) technology to create synthetic diamonds, and the infrastructure advantages it holds, relates to Porter's 5 Forces, specifically to the threats of new entrants to the market. De Beers' assertion about their massive advantage due to their know-how and infrastructure is an indication that the barriers to entry in the synthetic diamonds market are high. These barriers, resulting from De Beers' established technological, manufacturing, and distributive capacities, can deter new competitors, adhering to the principles outlined in Porter's analysis.