Yes. Books are "barely" pirated now because it is impossible to find most books from pirate sources. Hell, it's hard to find most books from legitimate sources online.

Books have an advantage on other media in that they are traditionally physical and their quality (when they are presented in a quality form) will still help sell them.

Having said that, the day someone manages to release a way (iphone app?) of letting you scan books easily (for book authors but lets not pretend it won't get used both ways) will be pretty awesome.