netmeg - 3:42 pm on Jan 27, 2012 (gmt 0)
There are numbers on this which I don't have the time to go look up, but as a general rule, people (particularly these days) tend to choose convenience over security and/or privacy. And we're not typical users here. If Google decides to do this (and I fully expect they will - note that link I provided above all Google products - I don't expect they'll be swayed if a few hundred or even a few thousand people jump out of the AdSense program.
The only thing that I see standing in the way of the inevitable (and this is a strong possibility) is that despite all the strong-arming and desperation moves, they are unable to convince Joe Standard User to get enthusiastic about Google+. And things start getting quietly dropped (Google Buzz anyone?)
That's what you want to hope for, I think.