Opinion: The Fate of a book!

WARNING:
This post is quite pessimistic and well 'realist': it is the 'fate' of most books! Also it is an excerpt from a book I read (Ama Ata's The Girl Who Can)and thought I should share but would like to hear from you on how true it is. So keep the comments coming.

Here it is:
"After a writer has written a book, no one, not even the writer knows for sure that a publisher would publish it. And if a publisher took it and published it, no one knows if the bookshops would take them wholesale to sell...And if the booksellers took them, they cannot be too sure that people would buy the to read!"