Perhaps I can shed some light on why researchers aren't willing to share. I have spent considerable time (years), money (hundreds), and hours (unnumbered) identifying and documenting my family lines. I'm not willing to post my hard work to a public format were there is no guarantee that the integrity of the information will remain intact. I'm happy to help others by pointing them to the resources I've used, but respect my own efforts too much to give away my conclusions. If I ever choose to make my research public, I will copyright and publish the information I've so painstakingly compiled. I'm sure there are others who feel this way as well.