Under Armour CEO doesn't get why Silicon Valley startups are so happy to lose money

AP/Under Armour Under Armour CEO Kevin Plank has one piece of advice for young entrepreneurs: Go make the sale. For many young companies, especially in Silicon Valley, being unprofitable is considered a right of passage. Companies can burn through cash as they build a great product, and making money comes only after testing for a good fit. Twitter, one of the best examples, has been public for more than two years and has never been profitable. Speaking at the festival South by Southwest (SXSW...