On Thursday 29 September, European Commissioner for Competition Margrethe Vestager struck a much more determined note than in January this year, when she raised the potential competition issues at stake in the control of major digital companies (such as Facebook and Google) over the data they hold. "Companies need to make sure they don't use data in a way that stops others competing", she told an event co-hosted by the European Consumer Association (BEUC)."But that doesn't mean there's a...