It might not be the main motivation, but it's certainly a legitimate concern. Malware does get distributed via illegal content sharing sites. Those sites do get

It might not be the main motivation, but it's certainly a legitimate concern. Malware does get distributed via illegal content sharing sites. Those sites do get used for phishing and card fraud. While I can't say I'm full of sympathy for pirates who get hoist by their own petard, plenty of innocent people also get hurt because they don't realise the site they are visiting is not kosher. It was high up on their favourite search engine, after all! Sending their users to those dangerous sources is hardly in any search engine's best interests, regardless of any other incentives that may be at work here.