The reason I ask is that if I Mapquest my house and zoom in, it's my house as it looked a few years ago......
Outside of metropolitan areas worldwide, also expect very poor resolution images. Anything smaller than a large house and you're out of luck.
No question that many amazing things would be discovered, and mysteries solved if in fact the entire planet coverage were high resolution.
Currently, that simply isn't the case.
With respect, that's a glass half-full vs glass half-empty matter. A surprising amount of truly undeveloped land, even in the depths of the third-world, is available at high (~1m GSD) resolution.
Get the app and go exploring.