What will be the effect on the Mexican drug cartels if the other States follow Colorado's lead and legalize recreational marijuana?

Will they cease growing pot? Will they continue to grow it and begin to try and market it legally in the US? Will they look to export it to other countries where it is still illegal? Will they concentrate more on cocaine?
In areas where they are the controlling power will they slowly fade away because they cannot keep up their lifestyle or continue to be a force?
What are your thoughts on this?