You are going to have a situation akin to what happened to Germany after the Wall fell, in Cuba.
The Miami Cubans will move in and take over, while the native Cubans will be so far behind because of all the years they lived under the repressive system.
The “Wall of the Mind” still very much exists in Germany today.
At this point, a large number of “Miami Cubans” are recent arrivals from Cuba who have not repudiated the communist system.