They may be less often made public, but legal wrangles and lawsuits between publishing professionals exist. 
Publishers are more voluble about the fight against various forms of censorship than about quarrels they themselves become involved in, sometimes in-house, sometimes in the courts.
A set of laws has been elaborated to govern contracts, author’s rights, the use of quotations, piracy…
The image, the credibility and the reputation of the house can be essential factors for the publisher’s success. Conflicts that occur regularly can receive media attention from the press and television.
The law and lawyers, the scope of interpretation of contracts, threats that turn into negotiations… they all play a role in the publishing world, regulating economic viability and intellectual creation.