I think it depends on scale. A lot of proven conspiracies are goverment cover-ups about some exact events (like killing certain people or medical tests) or something closed for one industry (like oil companies hiding data about global warming). Conspiracy theories often create much bigger visions, spanning across multiple goverments (often opposing each other) e.x Moon landing hoax, flat/hollow Earth or thousands of unconnected people (chemtrails, some medical theories).