Google Apps Standard might be different. Google Apps Standard is offering you the same thing that Google already offers for free, just using your own domain. It still has ads and such. As such, as long as Gmail, Google Calendar, etc. remain profitable, then Gmail for your domain, Google Calendar for your domain, etc. should have the same level of profitability (and cost). The additional service that Google is offering via Google Apps Standard is the ability to use your own domain which really doesn't cost Google.

GOOG-411 wasn't ad supported so they didn't make any money off of it. It seemed like it was being run in order to collect voice data to create better speech recognition algorithms. Now that many have smartphones, they're getting that data in a cheaper way and, ultimately, in a way that they can monetize easier. Rather than paying 800-number charges for everyone to call into (and pay while the call was connected), people are using their iPhone and Android devices to give Google voice data.

I think Google Voice is the more likely service to get canned. Phone charges can become burdensome while bandwidth is essentially free when you're Google's size (since I'm guessing they're working off peering agreements more than buying bandwidth). Even if they were buying bandwidth, bandwidth is something with lots of competitors and very low regulatory charges. Phone connections are different.