"Surveillance is the business model of the internet; companies like Google and Facebook constantly spy on their users’ behavior."

A few oversized websites acting as intermediaries is not "the internet"

The internet is a medium. Internet subscribers pay for access to the medium

The www is one use of the medium

These mass surveillance intermediaries operating websites are not even the entire www

But they aim to intermediate access to the rest of it

Any subscriber can use the medium and they don't have to conduct surveillance

For example

They can sell widgets

They can buy widgets

Commerce

They can also use the medium _noncommercially_

The "business model of the internet" is subscriptions. We pay for access to the medium

The (most successful) business model of the www (so far) might be advertising. That could change

But the www is not the internet. The internet is a medium, not what travels over it. It's not advertising, it's not content