I "pirated" (read) books to train myself. I guess I owe authors a percentage of my income now.
Let’s look at this like food, instead of knowledge. You ate a donut, and you got energy. Maybe you’ve eaten 5 donuts per year, for 20 years…so a hundred donuts. Maybe you didn’t pay for all of them, you got some at work or at a friends house. They stole a billion donuts.
The real question is whether the value of these donuts is diminished by being ingested by the AI and it's still not clear.