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Either you have fantastic resources, gimp your node like I do, or are extremely optimistic. Do you keep track of the bandwidth your node currently uses with the 1mb spam limit in place?
I guess I'm extremely optimistic but as I said, I don't really mind if I won't be able to run a node at some point. Why should I care anyway? The cat is out of the bag and if bitcoin eventually become too centralized and allow censorship then I'll just move to the next uncensored blockchain just like I will do if the bitcoin blockchain doesn't scale enough.