I can't be 100% positive, but in my experience I have had to install updates on top of newly downloaded Adobe products. That sounds kind of daft, so I hope I am wrong.
It does sound odd, and I've questioned Adobe on it, but they hold fast that they release the .0.0 version then only updates thereafter on purpose.
Me, when I release a new update to one of my products the main download gets updated with the new build.
As already explained, whenever you download any Adobe software installer, you will always get the original Gold Master version released, never an updated version. No exceptions.
Also, they never release global updates, only incremental versions in one-step updates.
That's just the way it is with Adobe. I can't explain the universe to you, I can only describe it for you.