i dont know that ill say IP shouldnt exist.

And the authors aren't really saying that, either.

To be clear, I don't agree with all of the authors' positions. I also think it's worth noting that the authors are not advocating for an elimination of the patent and copyright systems without replacing them with systems better suited to ensuring creator prosperity while also allowing for speedier human innovation.

It's worth a read, if you're interested in the subject matter. It challenged my opinions on intellectual property, but didn't change them entirely. Things they discuss, such as patent trolling and patent squatting, are worth contemplation. How can we change IP law to disincentivize such antisocial intellectual property law use by bad-faith actors?

ETA:

The economic burden of today's patent lawsuits is, in fact, historically unprecedented. Research shows that patent trolls cost defendant firms $29 billion per year in direct out-of-pocket costs; in aggregate, patent litigation destroys over $60 billion in firm wealth each year.

(From the above article.... and that was in 2014!)