What is your rep conspiracy theory? How do factories get them so good, and so quickly?

My husband and I have been talking about the rep world in quite a lot of detail over the past few weeks, and the question that always comes up is: How do the factories get replicas out SO QUICKLY (sometimes in the same week that the auths are released)? And at such high quality?

Do we think that rep factories are owned by the auth factories to monopolize the market? Do we think there is someone on the inside leaking blueprints to rep factories? Or are rep factories 'rejects' (lol) of auths? The last one is unlikely, but have heard this time and time again so thought to put it out there!

What do we think?