I am not sure there are a single set of realities that applies to all IP equally. If nothing else, we have copyright and patent because not all IP is the same. It follows that different types of content will be used differently, and the public will or may think of them differently, such that they will have slightly differing practical realities.
On a certain level, you're correct.
The different protection regimes for IP revolve around what is protected and for how long. Patents have a limited lifetime because we want inventors to be able to recoup their investments and profit, but we also want others to have the benefit of the tech because they may find a new way to use it that the original holder may never have imagined.
Copyrights have a longer lifespan, at least in part because their secondary benefits- their use by others- are not going to benefit society in general in quite as concrete a fashion as patents. Elton John's "Someone Saved My Life Tonight" is far less likely to actually save someone's life than a seatbelt or airbag, for instance.
Trademarks can be renewed essentially ad infinitum, as long as their owners keep registering them. That's because their main function is to make the identification of manufacturers and service providers easier- invaluable for building brand loyalty...and determining liability.
My point is that they don't have a lot of other product, so that thinking of the game content as a loss-leader may not be a wise thing for them.
They're the ones with the financial data. They
have to know what is selling and what isn't...and if the D&D umbrella has the RPG returning (
fake figures follow) $1.01 for every $1 while the video games base on it are returning $10 for every $1, and every other D&D product is in between those poles, the RPG is you loss leader, plain & simple.
Potential revenues? What potential revenues? I can understand the idea that someone may desire to pay the real owner of a property rather than take a illegal copy for free. But to pay one provider for an illegal copy when you can have an illegal copy for free in five minutes seems... a bit alien to me
Not every pirate distributes for free. One very insidious form of piracy dresses up their pilfered goods in all the hallmarks of a legit business and sells the property. With physical goods, these would be the guys selling fake Rolexes, Dooney Burke handbags, and bootlegged CDs & DVDs. In the purely digital realm, this is one of the big things that Russian and Chinese pirate sites have been doing...as well as a growing number of sites with ties to terrorist organizations (according to INTERPOL, the FBI, and other police agencies). The site looks like- say...Amazon.com.uk or perhaps a local retailer- and they're having a 70% off blowout sale! But all the money is going to the pirates.