I don’t think that meets the bar. Running a website is absolutely not equivalent to the collective effort people put in to populate that website with the information that actually gives the overall artifact its value. There is a large history of outrage when similar information repository websites with user-generated content violate expectations of openness. Nevermind the fact that the actual information itself isn’t even private or proprietary, just obscure and distributed.
> Do you think that you have a claim on ownership of the data because you drove by, saw what you liked, and decided that now you'll just rip the baton out of my hand?
I wouldn’t claim ownership nor want to, when I scrape stuff I usually just want information in a different format. I’m confused as to how you think you can even “own” data to begin with. Suppose that your users uploaded songs instead of RF info, do you believe you own their music solely because they chose to share it on your site? Do you think your users would believe that?