I think they have an issue of pride here. They did not expect there to be such a backlash against them and they would be ridiculously embarrassed to sheepishly concede to the outrage that they simply did not expect. So they are instead ignoring it to save face, and refuse to face the situation head on and admit they made a mistake.
Now, to this end, they have simply made it worse and worse, and stuck their heads quite far up their asses enough that it should be going out the other end. By this point, I doubt anything short of L3 will EVER return to them the respect that the community lost for them. I mean, this thing ended up being covered on major gaming websites, giving legitimacy to otherwise very ignorable articles about Capcom employees either badmouthing and criticizing the company (Inafune) or the company mistreating and running them ragged to the point of collapse. (Ono) With this outrage, it becomes personal with the fans, and becomes far more widespread.
TL;DR, Capcom is butthurt that they underestimated the fan demand and pulled the plug, underestimated the expected outrage, and refuse to swallow their pride and admit they erred, choosing to instead ignore the problem like little children.