Surveying history, one struggles to find good examples of advanced, developed economies slowing down development of any technology with a nebulous definition, obvious wide-ranging short to medium term economic benefits, and rich penetration into multiple industry sectors, due to reasons of speculative perceived long-term risks.

The government restrictions on cryptography is surely the nearest example within IT.

The government also restricts basic "intellectual development" activities, such as "copying stuff" and "inventing stuff".