Bandai seems to be of the opinion that the American market is not worth it, and they're unwilling to spend any more money on us. They said they're still willing to license series to other producers, but I rather doubt they'd hand their flagship mecha franchise to anyone else.
Their current plan seems to be to produce any and all further releases in Japan. They are now including English subtitles on most of their releases, and Japanese Blu-Rays are compatible with American players, so they figure that any interested Americans can import those Blu-Rays.
The issue there is Japan's insane prices for anime releases. The Japanese execs simply don't seem to get that Americans simply will not shell out $100 per Blu-Ray disc. But then, they also don't seem to care.