Sometimes in ways most people probably wouldn't expect, because most people aren't best-selling authors like Tom Clancy:

Wanda King, Clancy's wife of almost 30 years until their divorce in 1999, alleges that the writer wants to stop publication of Tom Clancy's Op-Centre, a popular set of books stamped with his imprimatur but written by others.
Ms King, 53, also alleges that Clancy has not hired an agent for the books, has refused to promote them and has blocked potential television spin-offs and a hardcover book deal for the series. In court papers filed last week in Calvert County, Maryland, where the writer is based, she asked a judge to remove her ex-husband as managing partner of the Op-Centre series and install her in his place.
Ms King owns a 25 per cent stake in the Op-Centre series and alleges that as part of the divorce settlement Clancy must work to "maximise" the book series' profits.
The Op-Centre series books were created in the mid-1990s by Clancy and Steve Pieczenik to cash in on recognition of the ubiquitous author's name. The books are co-authored by Pieczenik and another writer, Jeff Rovin.
Pieczenik said Clancy told him several years ago that he felt that the Op-Centre competed with the books he has actually written, such as The Hunt for Red October.
"He does not want to have the Op-Centre series in existence," Pieczenik said. "That's no secret."
Clancy, though, cannot stop the series by himself because of contractual obligations to Pieczenik and the divorce settlement with his wife, said Pieczenik, who is also a managing partner for the series.