Training RL agents in the real world is expensive and thus not parallelizable. The current focus on games and VR simulations of robots is exactly because of this reason. The RL agents are much more "sample inefficient" than humans, meaning they need more experiences to learn a skill.
And we, humans (and animals) have a huge environment with billions of agents and millions of years of evolution behind us which allows us to come preloaded with good instincts, they are trying to replicate this process in a few months.
And we, humans (and animals) have a huge environment with billions of agents and millions of years of evolution behind us which allows us to come preloaded with good instincts, they are trying to replicate this process in a few months.