The most one can say is that state intervention did no harm

In fact, neither the economic liberalization that began around 1980 nor the state interventionism that began in 1945 deserves such praise or blame. France, Germany, and Japan would very likely have caught up with Britain and the United States following their collapse of 1914-11945 regardless of what policies they adopted (I say this with only slight exaggeration). The most one can say is that state intervention did no harm. Similarly, once these countries had attained the global technological frontier, it is hardly surprising that they ceased to grow more rapidly than Britain and the United States or that growth rates in all the wealthy countries more or less equalized... Broadly speaking the US and British policies of economic liberalization appear to have had little effect on this simple reality, since they neither increased growth nor decreased it.

T. Piketty, Capital in the 21st Century (2013), 98-99