Sony is probably working on a music generator as we speak. So it's not like Sony vs AI but Sony AI Monopoly vs Diverse AI ecosystem including FOSS.
I also consider the data stolen in either case, since Sony isn't going to give a dime more to their artists when they either sell the data or come out with their own software. Actually, if everyone owns it and can use it to train, I see it more as sharing tbh.
I guess I might be bias, I hate these fat cat companies trying to strangle new tech so we have to lick their boots while using it.