Speaking as one of the authors of Unearthed Arcana, it seems to me a little petty to simply scan/retype the entire product and make it available for free to anyone who wants it. That, I would say, is hardly in the spirit of the d20 license or the Open Gaming movement.
We made UA open content to encourage publishers to try out some new rules in their products, as well as to recognize some exciting concepts pioneered by other companies, not so that people could abuse that generosity by getting 95% of the book for free.
Would you scan and distribute a Malhavoc product, or a Green Ronin product, or a Bastion product? They're all just as open as UA, but I'd hazard a guess that the authors and publishers wouldn't appreciate that either.
If a d20 publisher wanted to use some of UA's open content, I'd imagine that we'd be willing to work with them to get the relevant material (particularly the longer sections). Obviously, I can't speak for the company, but in such a case, I'd recommend contacting Andy Smith on the D&D Business Team to explain your needs.