I've read (elsewhere, I guess) that some 95% of the Milky Way's mass is estimated to be dark matter. If there are only 700g of it nearby, it can't be distributed the same way normal matter is. How can that be, since it interacts with normal matter gravitationally? Does the solar wind blow it away, or something like that?

I've also seen an article not long ago showing 'visualizations' of dark matter around a spiral galaxy, and it was mostly in teardrop-shaped lobes above and below the galaxy's center and aligned on the axis, rather than distributed through the disk. I didn't think of it at the time but now that I do, it seems like that distribution also indicates that light from the stars is pushing the dark matter away.