As I glance through various d20 books, I've noticed that many publishers tend not to use OGC from other companies, even when covering the same topics.
Now, some of this I guess I can attribute to the thinking of, "I can do it better!".
But, I wonder how much of this is due to potential sales forecasting? Meaning, do you think that a book about, say, Dark Elves, would be doing itself a disservice if it were to incorporate OGC from, say, Plot & Poison and The Quintessential Drow? Do you think it would sell less than if it did not specifically use OGC from other sources but came up with entirely "new" feats, skill uses, and PrCs that were really just tweaks on already existing material?
Now, some of this I guess I can attribute to the thinking of, "I can do it better!".
But, I wonder how much of this is due to potential sales forecasting? Meaning, do you think that a book about, say, Dark Elves, would be doing itself a disservice if it were to incorporate OGC from, say, Plot & Poison and The Quintessential Drow? Do you think it would sell less than if it did not specifically use OGC from other sources but came up with entirely "new" feats, skill uses, and PrCs that were really just tweaks on already existing material?