The Progressives had their way for much of the 20th century. But it became apparent that centralized experts weren't disinterested, but always sought to expand their power. And it became clear that central planners can never have the kind of information that is transmitted instantly, as Friedrich von Hayek observed, by price signals in free markets.
It turned out that centralized experts are not as wise and ordinary Americans are not as helpless as the Progressives thought. By passing the stimulus package and the health care bills the Democrats produced expansion of government. But voters seem to prefer expansion of liberty.