Oh my, this is amazing. I'm not sure the engineers realized despite their secrecy, it would be noticed by the press immediately after deploy. But the best part is how Google engineers immediately on seeing it figured "oh yeah, we should do that too" (although they apparently got the necessary approvals however that was done at Google, it was easier to do because they figured "well, youtube must have done due dillegen…
Something that stuck out to me was how concerned Google was that even while recommending other browsers next to Chrome, that putting Chrome first in the list could rankle antitrust regulators. Fast forward to 2019 and Windows 10 makes you fight multiple menus and "suggestions" just to switch your default browser away from Edge.
If you choose Firefox or Chrome it never suggests that you should switch to Edge.
Microsoft’s lawyers are not stupid.