Not necessarily. I'm sure there will be discussion at our next consulting meeting with at least one of our business clients on whether or not they should bother re-enabling Java after this; given that DHS also published a somewhat rare recommendation to completely disable Java, I could see a number of other corporations having the same conversation.
And sometimes that's all it takes to cripple adoption of a platform.
About a year and a half ago, I started disabling Java on new or newly reimaged computers for my users. I got quite a few complaints. It had many more uses than I expected.
This keeps happening, so maybe it should be. I don't want to discover that this has happened yet again, the hard way, before there is another noisy public disclosure. Not interested.