Explain what Dunstan means by “Corporation Homosexuality”?

This quote from the book pretty much explains it:

The mention of business reminds me of another phase of Boy’s sexuality of which he was certainly unconscious, but which I saw at work on several occasions. It was what I thought of as Corporation Homosexuality. He was always on the lookout for promising young men who could be advanced in his service. They must be keen apostles of sugar, or doughnuts, or pop, or whatever it might be, but they must also be “clean-cut”. Whenever he discovered one of these, Boy would “take him up”—ask him to luncheon at his club, to dinner at his home, and to private chats in his office. He would explain the mystique of business to the young man and push him ahead as fast as possible in the corporation, sometimes to the chagrin of older men who were not clean-cut but merely capable and efficient.