The largest difference between colonization ships and the new model mobile home collectives was the living conditions. Colonists have always taken the trip in cold sleep. They don’t need living space until they arrive and the colonization package starts to deploy. But people live in the mobile towns. They sleep at home, they need a place to work, and they want public places to get together with other people. They are places where people live. That is why most mobile towns have parks and theaters and all the other things that make up a planet-based town. People leave if they do not have the comforts of home.