If it is "basically...publishing business logic as a library" then why incur the expense of using such a scheme? Just publish the darn library and put it on a read-only shared directory. Why give up the use of purpose built version control and programming tools? Why give up the modularity and increased productivity that a high level language can give you?

Most of the time, it's because the organization thinks in terms of SQL and relational tables. There are better ways to do business logic.