like you said in the article, canon never really intended to get into the indie filmmaking business. nikon was a little late to the party, and if it wasn't for vitaly and the rest of the 'hacker' community, i doubt panasonic would have the success of the gh-series that they see now. these cameras all started out as stills cameras (some much better than others) that happened to do hd video; then people realized the potential. they were never designed as cinema cameras, let alone really 'serious' video cameras.
i think what is happening is the convergence of devices that are basically cannibalizing the companies' different product lines. they (canon) are obviously going to nerf the firmware and performance for the lower priced cameras so as not to threaten the high end models. why there are such a drastic jump in prices, i'm not sure; but there's obviously enough incentive (money) to continue to make video specific camcorders, video-capable dslr's and full on cinema-spec cameras. i think this issue happens with panasonic as well, though they claim their divisions are all independent; but i can't see a company purposely undercutting themselves like that.
i watched a top gear episode the other night where jeremy clarkson was reviewing the, new at the time, porsche cayman...good car, handles well, all that. but, if you look at it compared to the cheaper boxter and the more expensive 911, it fits perfectly in the middle; price, specs, performance and so on. i feel like canon is doing that with their product lines. camcorders are the boxters, cinema eos is the 911, and now the dslr's are the caymans. somewhere stuck in the middle between being better than average, but not quite the full potential.
i'm not sure what canon is thinking with the threat of legal action for hacking. didn't they learn anything from microsoft and the kinect? it is the homebrew/hacker people that are really driving the innovation and what is possible with these cameras. it's like honda threatening legal action for potentially modifying a civic. on a side note, why hasn't panasonic hired vitaly, driftwood and the like onto their development/firmware/something team? they obviously know how to get the most out of the cameras..