This is not a surprise;
We knew all along that Google is a business and they want to capitalize on traffic and user data just as much as we do.
In general, they are moving from pointing users to a source to doing the reading, reasoning, and acting for the user.
Google has always been a "transit point" for the user (people search, Google gives you options), like a middleman for websites. From what I understand, now they will be and look more like a final destination.
From a technical point of view, I think the winners will be the ones who have the clearest structured data, schema markup, and cleanest site architectures.
Referral traffic is the one taking a hit imo, which could obviously be a challenge for people who rely on ads, but knowing that it's all about making money, I don't think that G will shit on their face tho.