The old methods work best. If you have a significant number of people to work with, calling a town hall meeting can help people get the right attitudes. You've written that a CIO should be a benevolent dictator. If you start out as the benevolent dictator, you can become more collegial or more controlling as the situation requires. In the auto industry, a controlling style is expected.
People see a collegial style as weakness.
In music, the opposite is true. A lot of companies try to build a comprehensive team with the best people they can, then discover they cannot adapt to changing business conditions. I suggest building a small team of senior, high-caliber people who are generalists and leverage third parties as much as possible. That allows you to form and dissolve relationships according to your immediate needs. In any industry, the CIO has to engage the hearts and minds of the executive team.