You say future but Physx is actually quite modern (and aging). The thing is, devs don't have much they can do just with material and liquid physx like this. When computers are capable of doing these rendering tricks in real time as little background details, it'll be different, most studios will include it when relevant as volumetric water rendering or cloth and canvas objects around the world, but simulating Physx liquids takes tens of thousands of particles being simulated, and cloth is about as high in tri's as a full character model. Sure even my modern gaming desktop can handle that, it's a static boring scene with nothing else going on. But to apply that to a game, ontop of conventional engine taxing. Your game is going to be generally cut down to compensate for the performance cost of having these things. So you need to come up with a real good idea to make these really worthwhile.