Hi Michael, thank you for posting.
Although it doesn't have to, "wholesale" usually means selling. I think a different word might be more fair and accurate as WikiTree never asks for a cent :)
I donwloaded a gedcom and found it was not as extensive as I thought, mainly because it only included those on my Watchlist. If you have not downloaded one and checked it out you might wish to do so.
WikiTree is about sharing information freely... I'm sure that's why downloading is allowed.
Have a great day!