And *that's* a breach of the DMCA.
As mentioned before, it's legally arguable it's not because there is apparently no attempt to prevent unlocking of the data. Taking advantage of the absence of DRM isn't circumventing DRM, and there's no copy of whatsoever made so there's no copyright infringement either.
I think this may be the first time any consumer has ever complained about lack of DRM.
I'm not complaining at the lack of protection, actually. Having done my share of poking into game files to me being able to play with the data as is is fine

What isn't is naively thinking people are gonna sit down and pay for fully functional data they already have.
Which suggests that Capcom should deliberately *avoid* bundling the patch with any subsequent on-disc rereleases, despite the increased convenience to the player and negligible cost to them at that point.
Doesn't that strike you as *fundamentally* wrong?
Not at all. If Capcom wants to sell the right to play characters, they better make sure the characters can't be played with methods from 20 years ago, or at least not act surprised when those methods are applied.
Admittedly it's difficult for a multiplayer game because of the deterministic model of only sending commands, which means the character has to be fully implemented on both sides. But once again UE3 games, for example, have built-in well known methods based on encryption that have done a much better job of protecting or even hiding on-disc DLC.
It's not actually new that potentially-additional content was completed at the time of release but instead sold as a separate product, anyway.
I think with that one players were busy being pissed off at everything else the release did wrong

(including, well, all the cut stuff they found remnants of by poking at the data, amusingly)
That being said, it's worth noting the speech pack had no bearing on gameplay, so it's a closer equivalent to SFxT additional costumes, which little to no one really seems to mind.
Also in many markets they directly released the full talkie version, the US may be one of the few place where they still attempted the separate speech pack.