Porter's Five Forces model helps in understanding:

Porter's Five Forces model is a strategic framework used to analyze the competitive environment of an industry. It focuses on five key forces that shape competition and influence profitability. Among these forces is the threat of new entrants, which examines how new suppliers entering a market can affect existing players. This force helps businesses understand the barriers to entry, the likelihood of new competitors emerging, and how that can impact industry dynamics and profit margins.

Understanding this aspect is crucial for organizations as it allows them to preemptively address potential challenges posed by new suppliers, adjust strategies accordingly, and maintain a competitive edge.

In contrast, while the impact of competitor pricing strategies, effectiveness of marketing campaigns, and return on investment for advertising are important components of strategic planning, they do not fall under the core considerations of Porter's Five Forces model. Therefore, they are less relevant in the context of analyzing competition through this specific framework.