Many lawyers I speak to are reluctant (read: totally unwilling) to share anything at all created by another lawyer.

The concern is, of course, that when they do so everyone who sees it will think "ah-huh! Lawyer A is clearly inferior to lawyer B, because they shared lawyer B's content. Therefore all our business in the future shall go to lawyer B".

In short, it's the mentality of someone living in competition land.

So let's think about this for a minute - is that concern justified, or irrational? If you were interested in curating some content rather than producing everything yourself, how could you do it without crossing that line?