Not if Occam's razor (plus centuries of actual experience with catching fences -"professional" buyers of stolen goods- in such the black markets) simply puts the profit motive as the most possible explanation.
It's as if people never heard of art and jewellery heists before...
I'm saying that cooperation between buyers and sellers is something that goes on since time immemorial not some big conspiracy with unknown motivations...
It's as if people never heard of art and jewellery heists before...