A leader’s dilemma on team building

We want teams to explore opportunities, yet we celebrate speedy delivery. We advise people to think as a ‘group’ but treat ‘group think’ as a cancer in the organisation culture. We want self motivated, initiative taking teams, but at the same time fear uncontrolled outcomes they bring in. We want people to meet, discuss and make collaborative decisions, when in fact that decision could have been made by just one person, saving hours of meeting time. Are we walking the talk ?