German media conglomerate Bertelsmann has a bit of a reputation for being ahead of the curve and buying into emerging technologies early, and this week its German broadcast subsidiary RTL has snapped up full ownership of ad tech firm SpotX – to accelerate the company’s advertising revenue in OTT video while the time is right. SpotX first appeared on the Faultline Online Reporter radar back in 2014, around the same time that RTL first took a financial interest in the firm, and today SpotX is considered one of the world’s largest digital ad tech firms after 10 years on the scene. Since RTL’s 2014 investment, SpotX has almost doubled net revenues and grown EBITDA four-fold, while RTL has continued to…