Final answer:
The Porter's force that focuses on the strategic use of information resources to gain market access and create economies of scale is the potential threat of new entrants, which influences firm sizes and market competition.
Step-by-step explanation:
The force from Porter's framework that focuses on the strategic use of information resources to gain access to distribution channels and create economies of scale is the potential threat of new entrants. New entrants can utilize advanced information and communication technologies to compete with existing firms by reaching wider markets and operating more efficiently, which could lead to larger firm sizes. Yet, these technologies can also pave the way for smaller firms to operate globally and challenge large incumbents, potentially resulting in a market with more small competitors.