Short answer
Strategic initiatives can stall when priorities, ownership or resources are unclear. Competing incentives and gaps in manager preparation can add to the problem. Start by checking whether the strategic choice is workable, then follow how it is translated into decisions and work across departments.
The longer answer
When an initiative stalls, look for three things. Did the decision reach the managers who have to carry it out, with clear owners and dates? Does anything they’re measured on work against it? And can those managers move work across departments without escalating every disagreement?
If any of the three is missing, the initiative will slow down no matter how good the strategy is.