FWIW: I have been streaming FR24 my ADS-B data for a few years. In return they give you a business account ($50/mo value).
Back to the main point: Even the FR24 business-class account data is filtered. Given that this is an open protocol to begin with, I think the data should be recored "straight up" and made available to the public as a common service (benefit).
Future thoughts: Imagine if we had tons of people incentivized to deploy these? We could make "cyber" phased arrays on a massive scale by doing time of arrival analysis and so on. It could supplement the FAA primary/secondary radar system on a huge level. Perhaps even provide dense ATC control for drone operations where deploying primary/secondary radars is not feasible.
Just my $.02!