First and foremost, there are still people who feel that this is a hiatus, not a cancellation. I'm fairly certain Takinawa is confident it'll be back, and Funimation is still pretty convinced its just a hiatus. Don't forget that Funimation has its own channel. If push came to shove they could probably get it on there. True, not as wide of an audience as Cartoon Network, but still better than nothing.
Secondly, let's see what the DVD sales do before we start saying that sales are going to go one way or another on whether or not they're going to go away.
It's not impossible that Cartoon Network won't put it back on again, largely because the press release was really too vague and there is such a thing as "changing your mind". There's enough evidence to support but not confirm that Funimation just fell behind in sending them episodes, some from the press release, some from the large amount of dubbed information we're getting that's NOT from the Skypiea arc or beyond (Unlimited Adventure, Arbasta, LOTS of early episodes), plus other Funimation properties that are not One Piece.
The next big thing is that next weekend is New York Comic Con, where there will be both CN and Funi reps. I feel like there was a third player (was it Toei?) that got mentioned somewhere. I'm GUESSING that the reps report back to their companies and let them know what people say at the conventions.
More or less, the BEST thing we can do is buy the boxed sets as they come out or when we have the money to. Sure you can send POLITE and INTELLIGENT letters to Toei or Cartoon Network or Funimation - no whining!
I'm going to go see what's going on with Funimation's website. I think they have forums there and I want to see if anything's buzzing over there.