According to Chinese horoscope 2015 was the year of the sheep. As we say baa-bye to 2015 we look back at a year where technology and digital disruption became synonymous with the upheaval of traditional business heavyweights. Consider the following: The world's largest taxi company owns no taxis: www.uber.com The world's largest accommodation provider owns no real estate: www.airbnb.com The world's largest phone company own no telecommunications infrastructure: www.skype.com