I wonder if Google will take note and make a specific donation. Might be a good PR move.
This it was it says about the rights you give Google by/if you are using their services:
"The rights you grant [to Google] in this license are for the limited purpose of operating, promoting, and improving our Services, and to develop new ones."
The only rubric archival could possibly fall under would be "promotion", but that feels marginal at best.
Seems like whatever legal theory the Internet Archive is using must apply to everyone, including Google, unless Google waived whatever that is.
But unless there is a lot of public support it could easily backfire, as when everyone realize how the "promotion" clause can be interpreted, the TOS suddenly look quite a bit more onerous.
I'm leaning to the latter.