We all know as soon as content is presented to a user it can be copied, and I think with photos in particular users know how to do this easily (via screenshot,

We all know as soon as content is presented to a user it can be copied, and I think with photos in particular users know how to do this easily (via screenshot, if nothing else). I could see the argument could be made that doing anything that makes it appear like you can revoke access in the future would be somewhere between misleading and pointless. Not saying the Google Photos sharing UX can't be improved, but doing much more than improving wording is probably not worthwhile. I'm personally happy with URLs and text like "anyone with this url (including anyone they share it with) can view, download and copy the photo(s) you've selected".