Nothing against video. I just think maybe (or maybe not!) having one good model with little or no video could possibly permit Canon to offer a unit with very good stills capability at a lower price point. If Canon can make an "astrophysics" version, and apparently Leica can make a B&W only version, then surely a stills-only (or stills and very basic video only) version is not such an odd-duck?
Leica make stills only cameras but they are not cheap. That is the part you're missing -- a cheap stills only camera would not be a viable product unless it sold enough and didn't undercut other products. Stills only models are niche products and therefore quite expensive.
The good news is that if you really do want a stills only body, there are some very good inexpensive stills only cameras on the market -- the 40D, the 50D, and the 5D classic. Canon aren't interested in selling a stills only full frame body for less than $1000- or a stills only APS-C for less than $500-, but you could buy one in those price ballparks if that was what you really wanted.