Back when my father, Leonard Shatzkin, was active with significant publishers — the quarter century following World War II — he observed that very few books actually took in less cash than they required. That is not to say that publishers saw most books as “profitable”. Indeed, they didn’t. They placed an overhead charge of 25% or 30% or more on each book so most looked unprofitable. But that didn’t change the fact that the cash expended to publish just about every book was less than the cash it brought back in.
The exceptions were usually attributable to a large commercial error, most commonly paying too much of an advance to the author or printing far more copies than were needed. But, absent that kind of mistake, just about every book brought back somewhat more revenue than it required to publish it.
This led Len to the conclusion that the best strategy for a publisher was to issue as many titles as the organizational structure would allow. That was a lesson he passed along to the next generation of publishing leadership that came under his influence. And the leading proponent of that business philosophy was Tom McCormack, who worked for Len at Doubleday in the late 1950s, then went on to Harper & Row before he ascended to the presidency of then-tiny St. Martin’s Press in 1969. Tom often credited the insight that publishing more books was the path to commercial success as a key component of the enormous growth he piloted at St. Martin’s over three decades.