I pretty much agree with what you said, Basil. Games are just limited in scope to do things like that. Even if it provided you the option of the tourniquet, it most likely doesn't teach someone how to appropriately apply one. You'll just have to wait for full VR if you want that sort of stuff. Then it's not really a game because many levels of abstraction would be missing. Then it gets in the realm of simulations potentially.
Games are all about abstraction. My belief is that playing many types of non-educational games will do just fine, because you learn how to intuitively solve problems by generally abstracting concepts in a situation like you have in many video games. You probably don't consciously relate a current, real-life situation to a concrete situation in a game, but the mental process is following the circuits in your brain that was strengthened by abstract gaming. In my mind, video games have given me much, from motor skills, the abstraction abilities, determination, spatial thinking, and who knows what else. I personally attribute Gran Turismo for teaching me how to drive.
Of course, I'm sure there are some outside variables that might prevent or enhance someone's capability of gaining from video games. Just too much we don't know about the mind, about subjective experience as opposed to objective. Some other person out there may have become a terrible driver playing Gran Turismo. Or maybe a poor soul out there can't play GTA3 and take away an appreciation for the scale of its world, instead wanting to go on a rampage through city streets. In my subjective experience, I feel that video games have enhanced me on many levels, because I feel I have really paid attention and worked at taking whatever I can from them. What else would or could I attribute that to? Video games have been the most consistent aspect of my life. Maybe the aforementioned qualities are innate. But it's probably more accurate to say that my ability to abstractly derive this stuff was started as a seed in my earlier gaming days.