Legendary investor Warren Buffett, an ardent supporter of Apple Inc. stock, has highlighted the company’s exceptionally devoted customer base as a key factor in his admiration. According to Buffett, iPhone users display such unwavering brand loyalty that they would not permanently part ways with their phones even if offered $10,000. Don't Miss: Why Silicon Valley Elites Are Betting On This Startups Vision For Re-Uniting American Families Berkshire Hathaway Inc., the investment conglomerate Buffe