Wild cattle (if such things still exist) would be severely hampered by not feeling pain. The thing is, we're not releasing the cattle we manipulate. When we are farming cattle, we don't need the cattle to know they've been injured as it can only make them less cooperative with their handlers and other cattle. In fact, what we plan on doing to cattle (slaughtering them for food) isn't good for their overall safety either.
A recent post at the Press Start To Drink blog examined the relationship the games industry has with copyright laws. More so than in some other creative industries, the reactions of game companies to derivative works are widely varied and often unpredictable, ranging anywhere from active support to situations like the Chrono Trigger: Crimson Echoes debacle. Quoting: "... even within the gaming industry, there is a tension between IP holders and fan producers/poachers. Some companies, such as Epic and Square Enix, remain incredibly protective of their Intellectual Property, threatening those that use their creations, even for non-profit, cultural reasons, with legal suits. Other companies, like Valve, seem to, if not embrace, at least tolerate, and perhaps even tacitly encourage this kind of fan engagement with their work. Lessig suggests, 'The opportunity to create and transform becomes weakened in a world in which creation requires permission and creativity must check with a lawyer.' Indeed, the more developers and publishers that take up Valve's position, the more creativity and innovation will emerge out of video game fan communities, already known for their intense fandom and desire to add to, alter, and re-imagine their favorite gaming universes."