Not accepting your terms doesn't make someone a parasite.

By your own description of what you're doing, yes it does? You've said nobody can make you contribute back to those creators via social norms so you will not, so within the system your actions are parasitic? You consume/use but contribute nothing back, how is that not parasitic?

Because the creator doesn't experience any per unit cost of content distributed only google does and the unit cost of bandwidth is so close to zero it would be hard to enumerate.

I do buy things. I agree to buy them before I fork over my money and I reject deals that I perceive would disadvantage me. That makes me a smart consumer.