Porter's approach was the dominant paradigm throughout the 1980s. However, the approach has attracted considerable criticism. One important criticism is that it is possible to identify successful companies that pursue a hybrid strategy - such as low cost position and a differentiated position simultaneously. Toyota is a classic example of this hybrid approach.[68] Other scholars point to the simplistic nature of the analysis and the overly prescriptive nature of the strategic choices which limits strategies to just three options. Yet others point to research showing that many practitioners find the approach to be overly theoretical and not applicable to their business.[72]
In addition to being cost-effective, speed is another advantage of telephone interviews. A rate of five or six interviews per hour is typical, but experienced interviewers may be able to conduct more. Phone interviews also can cover a wide geographic range relatively inexpensively. Phone costs can be reduced by taking advantage of less expensive rates during certain hours.

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Marketing warfare strategies are competitor-centered strategies drawn from analogies with the field of military science. Warfare strategies were popular in the 1980s, but interest in this approach has waned in the new era of relationship marketing. An increased awareness of the distinctions between business and military cultures also raises questions about the extent to which this type of analogy is useful.[108] In spite of its limitations, the typology of marketing warfare strategies is useful for predicting and understanding competitor responses.
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