No it doesn't. Read it again:HeavenShallBurn said:The legal definition of theft explicitly categorizes it as the removal of personal property from the possession of the rightful owner.
the generic term for all crimes in which a person intentionally and fraudulently takes personal property of another without permission or consent and with the intent to convert it to the taker's use
Nowhere in that definition does it say that the original owner loses possession of the item. The thief takes the personal property of WotC without permission or consent and with intent to read it and use it in their games. Theft.
But while you've got your legal dictionary open, take a look at the definitions for "Property", specifically "Intellectual Property" if you're hanging on to the idea that if it's not physical it's not property.