It's not public, it's just generally accessible but with rules. It's similar to how a physical shop is accessible to everyone by default, but the owner still ha

It's not public, it's just generally accessible but with rules. It's similar to how a physical shop is accessible to everyone by default, but the owner still has the right to refuse business and deny access if you behave bad. The problem is that you can't easily deny companies like booking-com access to a website, as they can circumvent any technical barrier.