I wonder if there's any sources for those images that aren't cough restricted. Could be interesting to play with, though maybe not worth paying for.
But I can imagine it all depends on jurisdiction. A Russian or Chinese satellite imagery company will have no problem publishing clear images of US military bases, while an American satellite company may have to comply with US laws prohibiting that.
And vice versa.
Ultimately if you cobble together imagery from multiple sources, you can probably get everything you want.