Lawyers needed six kinds of change markup, Word had one. Word added those, and more, lawyers switched. Further, they had document management systems that were

Lawyers needed six kinds of change markup, Word had one. Word added those, and more, lawyers switched. Further, they had document management systems that were WP savvy, are notoriously loathe to upgrade systems that are working, however badly. Any money spent on systems doesn't get distributed to the Partners. It's a very direct incentive.