blackmarket make it sounds like people are buying copies. These no law stopping people from importing dvds so it's clearly isn't a blackmarket.
I did actually mean that as 2 different points! If there is no region coding then its likely a larger blackmarket will appear, pirate copies arent just limited to a country anymore so obviously the customer base increases internationally. The use of foreign cheap labour and production costs aswell as loopholes in more relaxed legislations means benefical results to anyone envolved within the market.
Importing DVDs was my second point as its obviously going to be a lot more cost effective to order DVDs from a cheap import site rather than to buy RRP from a UK retail store, this obviously has economical effects.