His response?
"There are many things Apple does because they are right and just, and a return on investment (ROI) is not the primary consideration on such issues."
"When we work on making our devices accessible by the blind," he said, "I don't consider the bloody ROI." He said that the same thing about environmental issues, worker safety, and other areas where Apple is a leader.
He didn't stop there, however, as he looked directly at the NCPPR representative and said, "If you want me to do things only for ROI reasons, you should get out of this stock."
Source: http://www.macobserver.com/tmo/article/tim-cook-soundly-rejects-politics-of-the-ncppr-suggests-group-sell-apples-s
The NCPPR is The National Center for Public Policy Research - which is basically a conservative think tank/lobbyist group in the US.