According to the Western Digital Corporation FY2017 10K, WDC "On May 12, 2016 (the "SanDisk Closing Date"), we completed the acquisition of SanDisk (the "Merger"), a global leader in NAND-flash storage solutions, pursuant to the terms of the Agreement and Plan of Merger, dated October 21, 2015.The aggregate purchase price of the Merger was $15.59 billion. In connection with the Merger, we entered into new debt facilities aggregating approximately $18.09 billion in principal to finance a portion of the purchase price related to the Merger." Within that context starting from EOY WDC FY 2015 carried forward through EOY WDC FY2018 and distributing your words  with a short comment and at least (minimum of) one or more sentences of supporting text, column of data, or figures extracted from one or more WDC 10K preceded by the question number that your answer corresponds to:

(1) in terms of the 2017 10-K what does WDC state is the market and competitive landscape within which WDC competes and who were the transformative competitors, new entrants, emergent technologies, suppliers, and buyers? What were the strategic objectives for WDC when they assumed $18.09 billion debt to acquire SanDisk?