In Sony vs. Universal case, Sony is the producer of a tool where the consumer uses to "time-shift" a broadcast that they legally are allowed to view. Similarly, you can rip your own CDs or photocopy your own books. This case never made reselling those content legal. OpenAI does not train ChatGPT on the content you own - they do it on some undisclosed amount of data that you may or may not have a legal right to access, and then move on and (is shown to) reproduce it nearly verbatim - they may even charge you for the pleasure.