Movies ripped weeks before for sale?

[gumbo]

I am sorry if this has been answered in another thread but I did not see it, so this is my question:

For years there are often Blu-rays ripped into sharing places before disks are for sale. Even the new De-UHD is boasting many disks many days before sale date. How can this be? Is there a spy in the movie companies?

[StainlessS]

Is there a spy in the movie companies?

Evidently, yes.

It was said somewhere [on-site I think], that there were instances where production plants in China were officially making disks for distributer,
also sometimes had a second production line making pirate disks, very efficient, Henry Ford would have been proud of it :)

[manono]

Also, distribution warehouses get them early and sometimes a few disappear.