Which of the following are pitfalls of using a combination strategy? (Check all that apply.) Multiple select question. Firms that are not able to attain both strategies may become "stuck in the middle." Firms may underestimate the challenges and costs associated with coordinating value-creating activities in the extended value chain. Firms may miscalculate sources of revenue and profit pools in their industry. Firms become known for being either a cost leader or differentiator and fail to attract enough of a customer base