I don't get what you mean. How do you mean "leech"? The point is that anyone — actually let's take a concrete example, Google and Deepmind — when they produce s

I don't get what you mean. How do you mean "leech"? The point is that anyone — actually let's take a concrete example, Google and Deepmind — when they produce something, that was due in part to their own labour and in part to the heritage that the past generations and the current fellow humans have given them. Therefore, in principle, some of the fruits of their success belong to them and some belong to society. It's now a matter to discuss the split ;)