/sarcasm on
Don't you feel special when a private tree owner deems you worthy of viewing their special tree with all of their super secret one of a kind source documents?
/sarcasm off
For what it's worth, I've found that telling a private tree owner "Oh well, your loss" typically initiates some sort of inane rage that results in nasty messages telling you how great their tree is and that they don't need to your results as they've already proven every branch beyond any doubt.
My experience is that they really demonstrate just how woefully uninformed they are about what they've spent their money on and how to make use of the results.