Capping the population of suburbs

What if each of the thousands of American suburban communities had a maximum population? I had the idea after rereading David Macaulay’s City:

What could the benefits be for American suburbs? As described here, the problems that come with more residents than resources would not occur. Suburbs could be a similar size. Each suburb could have facilities for residents to access and infrastructure they need.

This would go against the American ideal that growth – including population growth in suburbs, cities, and communities – is good. Some suburbs are bigger than others. Americans might often assume because those communities are more successful and desirable. They have competed well. But, that might not be the full story. Are some communities small for particular reasons? Is growth always good?

I am under no illusions that most Americans would want a population cap for suburbs or any other community. And simply capping the population does not address all the issues communities and their residents face. But, it is interesting to consider what good might come from planning ahead for meeting needs in communities with a maximum population.