Adobe isnt going to implement anti piracy acts just for the fact that warezing their products actually BENIFITS them...
By allowing Photoshop and Premiere to be warezed by people who wouldnt buy it anyways, it increases their exposure, and makes it so that any other similar products dont become widly used, and it also prevents cheaper products from being developed. The type of piracy that Adobe goes after is corporate piracy. They know that any real buisnesses using Premiere or Photoshop will have to use registered versions. And those are the actual customers.
Attack of the Killer Stop Signs!
This Winter, You're coming to a dead halt'