Don’t see people chomping the bit to take down other sites that have been doing this for decades.

But this hasn't been happening for decades. Machine learning algorithms are an incredibly new way of processing data. All those scenarios you are talking about required a human to be the one doing the reading and summarising, which for most authors is fine, they expect people to read their work and summarise it, or quote it.

What they don't expect is for that work to be fed in full into a private companies data set to train a machine how to duplicate their content at speeds completely incomparable to human capabilities. We're talking about something completely new, completely unseen and you're disregarding the rights of those creators to not want their art, music or writing to be fed into the endless churn of data for these megacorporations.

Also, it's champing at the bit, not chomping.