BIG technology firms elicit extreme and conflicting reactions. Investors love them for their stellar growth and vast ambition: the fa ANG group of technology stocks, comprising Face-book, Amazon, Apple, Netflix and Alphabet (Google's parent), is worth more than the whole of the ftse 100. Without them to power its growth, America's stockmarket would have fallen this year. Yet the techlash has also entangled the digital giants in all manner of controversies, from data abuse and anti-com-petitive behaviour to tax avoidance and smartphone addiction. They have become the firms politicians love to hate.
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