You analogy, besides simply sucking, is misplaced.
Turbine/DDO isn't an essential service. It isn't a matter of accessibility or safety. It has nothing to do with bylaws pertaining to discrimination (disability).
DDO is a game. Entertainment. Just like any entertainment, Turbine caters to a specific portion of the population. Translations into other languages and accessibility for disabled go beyond the scope of the target. Turbine has no need or requirement to alter the game to address those issues UNLESS it is financially motivated to do so.
Given that in my 3+ years, I've seen maybe 3 "I am colourblind!!" topics, I'd say there is zero reason for them to care. Frankly, I'd rather Turbine fix the blank favor panel, the ring sets, the broken capstones and add the missing PrE's, a new set of capstones, new crafting, new races, guild housing first...then maybe we can look at helping the handful of people that choose to run headlong into the proverbial brick wall without a helmet or a spotter