People don’t resist change. They resist being changed.
— Peter Senge
When driving change in a company, you better make sure you have active supporters, but don’t forget about people who will resist it. Some will be just reluctant to change their work habits. Others might see this as a redistribution of power and actively oppose it.
The best way to deal with this is not going to war or exercising power, but rather recruiting them to your cause. That said, have a plan for when recruitment fails.