At a fundamental level, my complaint isn't about money or access, it's about ownership.

Yes, money and access are important. Yes, ownership has money and access implications. But ownership in itself is fundamental, and the money and access problems usually don't immediately follow the ownership problems, because if they did, nobody would give up ownership in the first place.

I've said it before and I'll it say again: corporations don't have the right to "innocent until proven guilty". We don't have to wait for corporations to do something wrong to do something about it. A lot of people on Hacker News seem to have this idea that we should wait to regulate until businesses follow incentives to the point of doing great harm, and then once they're when they do great harm, we should just say, "Oh it's not their fault, they were just following incentives."

I don't accept this. It's obvious that taking publicly owned data and making it privately owned will lead to Google placing that data behind a paywall, an ad-wall, or a simple loss of access if Google feels they can't monetize access. Even if Google maintains a relationship with the USGS such that we always have access, there's no reason for the USGS to spend our tax dollars to pay rent to Google as a middleman. We don't have to wait for Google to follow incentives to that point--we can see where this is going and we don't have to pretend we don't.

I assume the USGS still holds the same data, no less accessible than before.

So, if Google has put their copy of the data behind a wall, or deleted it, it's no less accessible than if Google had never been allowed to make that copy.

but... it's not current data. the historical data loses value as it ages. Aerial scans of "one month ago" are now less accessible.