Spotify turned 20 on Thursday only months after Daniel Ek, who founded the $100 billion music juggernaut stepped down as CEO. Ek, who cofounded Spotify in 2006 in Stockholm, in January stepped into a new role as executive chairman role with a focus on big-picture moves and capital-allocation decisions. The company has elevated co-presidents Alex Norström and Gustav Söderström to serve as co-CEOs. Norström was previously chief business officer o…