private equity firms, industry, investors, rising oil prices, investment, tension-free, increasing   fame, modern-day, Warburg Pincus, buying   shares, higher   prices, investment option, High Net worth Individuals, HNIs, invest in small, buyouts of large   well-established companies, bad reputation,   takeovers, growth of the private equity firms, second   wave, dot.com bubble, hi-tech companies.  
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