I'm genuinely confused. Is the OP saying secondhand purchases do or don't create profit for Lucas? I guess the other posts suggest that xhonzi advocates not buying the BR at all if one does not agree with its quality/content.

Not buying from amazon or similar retailers means they might order fewer copies in the future to match lowered demand. Buying from ebay might work differently, though. I'm not sure what the "end result" is but each item ultimately was purchased from LFL and 20th Century Fox.