Develop a paper on Contending Forces and Contestable Markets for General Motors and Dell technologies. Refer the following paragraph for further details.

Briefly explain contending forces with the help of the definition and prepare a detailed paragraph based on the below hints.

Contending forces consist of (1) threat of entry, economies of scale, product differentiation, capital requirements, cost advantages and disadvantages, access to distribution channels, and government policies, (2) vertical and horizontal linkages of suppliers, (3) understanding consumers and buyers along with substitute and complement products. Linking these concepts in your discussion allows you to understand the contestability of the market structures.

Assessing competitive positions improves a firm's chances of designing strategies that optimize its environmental opportunities. The following criteria are often included: market share, breadth of product line, effectiveness of sales distribution, proprietary technologies and patent rights, price competitiveness, advertising and promotion effectiveness, location and age of facility, capacity potential/limitations and productivity, and the quality of the workforce.