Or you could compare to Germany, Spain, or Belgium, and come to a different conclusion. West Germany had a federal system installed after World War II where the Länder (states) have considerable power. When it came time to accommodate additional states as a result of unification, the former East German states were folded into the West German structure and now function identically.
But the German entities have far less of a wide scope in what they can do independently of the federal government.
Spain continues to spin off responsibilities to the comunidades autónomas, which are roughly equivalent to states, and sometimes more (e.g. Cataluña).
Very different. Spain was formed around the time of Columbus out of a whole bunch of independent kingdoms and principalities, most with their own language. While united with Castilian as the official language, some areas continued to use their own language and customs. There have been efforts to make some of them, such as the Basque Country, Galicia and Catalonia, independent but associated with Spain. Those areas are more like what Puerto Rico is to the United States... separate customs, language, culture, art, literature and identity.
There are days when it seems like Belgium is held together by bubblegum what with numerous disputes between the Flemish north and the Walloon south, both of which have more power than the national government. Or as is often stated in the Benelux region, "Belgium is the world's most successful failed state."
But, in the radio world I was thinking of larger nations, such as most of the former Soviet / USSR like Poland, Hungary as well as France, Spain, and even the radio anarchy of Italy.
France is notable for being one of the most centralized democracies in the world. The Netherlands were once not far behind, but more responsibilities and powers have gone to the provinces in the past couple of decades.
But you can take a two hour train trip from nearly anywhere in the Netherlands and be in another country.
France, though, has amazing national radio services with superb web complements including streamed format variants and very good use of the web to do weather and traffic for every significant metro in the nation except Basse-Terre and Fort-de-France.