Comment by prasadjoglekar

Two different issues IMO. Piracy is depriving someone of payment for an item for which payment was expected. Neither you nor Perplexity may pirate a DVD that you didn't buy.

Copyright usually doesn't prevent copying per se, it's the redistribution that is violative. You, as well as Perplexity are free to scrape public sites. You'll both be sued if you distribute it.