> If you've uploaded it, there's no sense in taking it down. Google already has it. Just don't log-in to Google accounts and don't take their cookies.

I meant in terms of making it convenient to use that data in some other environment when one moves away from Google.

My Drive contents, for example, will come down in doc formats that may or may not be immediately compatible with whatever I want to move to (be it someone else's cloud or locally-running desktop editors). And it'll all have to be re-indexed for search purposes (unless I just decide "being able to search all my documents regardless of their format" is one of those Drive features I no longer care about).

Photos as well... I can pull my photos down, but I'm going to leave behind those "Find all pictures of a cat" or "Find all pictures of my mom" features that Google Photos provide.