Microsoft is empire building because the country’s regulatory focus is on its biggest rivals. Microsoft announced that it had acquired Nuance Communications for $16 billion ($19.7 billion including net debt). The deal gives Microsoft a company that specialises in voice transcription and related artificial intelligence software. Nuance has a particular niche in health care, providing software to digitise conversations from doctor’s visits and facilitate clinical documentation. In less than three years ago, Microsoft paid $7.5 billion for GitHub. Less than five years ago, Microsoft paid more than $26 billion for LinkedIn. Nuance is Microsoft’s fourth such takeover.So far, Microsoft shareholders don’t seem to have jitters about the Nuance deal, Microsoft shares ended the day about flat.