Bill Rudin, the civic-minded real estate billionaire, admired in New York for his family’s remarkable success, apparent functionality, and steadfast devotion to New York civic life, made a startling declaration on Wednesday morning at the Harvard Club.

“I got a call the other day from an Albany politician,” said Mr. Rudin, the chairman of the Association for a Better New York, speaking in his capacity as the head of one of New York real estate’s…