* While you can Takeout your data, enjoy the process of reshuffling gigabytes of Drive contents, calendar entries, YouTube videos, etc. Into other application systems.
* Disconnection from the Cloud makes everything strictly less convenient. "Oh, I'll just throw you a Drive link... Oh wait, I guess I'm going to have to upload it to something else that you may or may not have access to, or email it to you and hope that your email server and my email server agree on what the maximum transfer size is, or I'll upload it to a web server and toss you a password in hope nobody else cracks it while you're getting it because I misconfigured my server." Then, of course, if they need to make changes they'll have to email their copy back to you... Remember the days of report-final-final2-june-version.doc? Enjoy going back to that.
* Replacing one set of integrated Google services with a slew of third-party solutions means none of those solutions are expected to work with each other, and while you leave behind the disadvantage that Google could decide your account is terminated and you lose access to everything, you'll be replacing it with a disadvantage that any individual third party provider could pivot or collapse and you lose access to the service they provide. To say nothing of the need to have to track dozens of authentication credentials now, unless you delegate to a third party identification provider (whoops, that's also Google...). And, of course, since they're not funded by the largest advertising network on the planet, at least half those services will charge you money to be less convenient.
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 guess I'm going to have to upload it to something else that you may or may not have access to,
If you looked into alternatives, you would find many don't require any account or login by the receiving party. Example: box.com links . Actually, I'm pretty sure that's the norm.
> I'll upload it to a web server and toss you a password
Look, you've been stuck in the Google bubble for too long. The weather is just fine outside.
> 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.
* While you can Takeout your data, enjoy the process of reshuffling gigabytes of Drive contents, calendar entries, YouTube videos, etc. Into other application systems.
* Disconnection from the Cloud makes everything strictly less convenient. "Oh, I'll just throw you a Drive link... Oh wait, I guess I'm going to have to upload it to something else that you may or may not have access to, or email it to you and hope that your email server and my email server agree on what the maximum transfer size is, or I'll upload it to a web server and toss you a password in hope nobody else cracks it while you're getting it because I misconfigured my server." Then, of course, if they need to make changes they'll have to email their copy back to you... Remember the days of report-final-final2-june-version.doc? Enjoy going back to that.
* Replacing one set of integrated Google services with a slew of third-party solutions means none of those solutions are expected to work with each other, and while you leave behind the disadvantage that Google could decide your account is terminated and you lose access to everything, you'll be replacing it with a disadvantage that any individual third party provider could pivot or collapse and you lose access to the service they provide. To say nothing of the need to have to track dozens of authentication credentials now, unless you delegate to a third party identification provider (whoops, that's also Google...). And, of course, since they're not funded by the largest advertising network on the planet, at least half those services will charge you money to be less convenient.