Yes, we can get easily images from landsat or sentinel satellites, but the resolution isn’t enough for seeing individual buildings like that, unfortunately. there are also the cbers ans an indian satellite which I don’t remember the name, offering free high resolution images (still not on par with the ones in google maps), but will lack global coverage

Not necessarily, if you frequently reference satellite imagery like in the open street map community, you’ll notice that colors and saturation cary wildly between satellites, because they use different techniques to get clearer pictures through various atmospheric effects, and some techniques give greyscale output which may just be combined with color data without much regard for aesthetics. For many applications, color is unnecessary, so many sources just don’t bother touching up the colors. It’s totally believable that both images are as-is from their respective sources.