Centralization itself carries a threat of monopolization of the information, and when it is monopolized, it stops to be openly available for the public.
Instead, conduct of a single firm could be held to be unlawful attempted monopolization only when it actually monopolized or dangerously threatened to do so.
What they instinctively opposed was the crystallization of differences, the monopolization of opportunity and the fixing of that monopoly by government or by social customs.