No. Most of the content from Morrowind and the game is really to good to be released free. Daggerfall and Arena were release free because most of it was buggy. And it use a different program to run it. *DOS* *which is like old*
Morrowind runs on the Gamebryo Engine, the same engine that Oblivion, Fallout and Skyrim run on. So no there's no chance. Maybe a price cut. 2.99$?
Both, Arena and Daggerfall, run fine on modern computers. You can download a preconfigured installer if you don't want to deal with DOSBox.
Morrowind is still popular and sells, though, so tough luck with it being free any time soon.