Personally I like the idea of something like chatgpt replacing google search. But, and a huge but, I miss the sources its trained on. Are these copyrighted sou

Personally I like the idea of something like chatgpt replacing google search. But, and a huge but, I miss the sources its trained on. Are these copyrighted sources, who owns the rights to the content it spews out? I like to know whos content I am reading and or using (when opensource) to reference them when needed.