Just to be a Devil’s advocate here I want to throw in this food for thought. There was a large scale “theory Y” experiment in history , The October revolution in the Russian Empire in 1917 ( that is when Soviet Union was created), because people wanted to make decisions and govern themselves, it worked for 10 -15 years, but then because of fatigue, or chaos, or to not having the skills , or simply wanting a strong leader , it produced Joseph Stalin who was one of the most autocratic leaders in history ,so make sure that you team is ready for theory Y, do not throw them into all the decision making, it is sort of like leadership a learned skill.