By current classical music standards, the Lyric Opera of Chicago is a wildly successful operation, selling 98% of its seats and projecting a surplus of $700,000 for the current season. The enviable culture of philanthropy in Chicago helps, as does the city’s huge population and the willingness of certain patrons to pony up $12,500 for a ticket to this weekend’s season-opening gala. In an era when serious opera is becoming a luxury unavailable to denizens of most U.S. cities, the Lyric is the shining example of how to build a serious company outside of New York.