Takara may never have owned the moulds in the first place, the original companies that produced these toys for them may have owned the mould but not the rights to produce these items legally without Takaras approval. This way Takara most probably thought they were saving money on something that would only have a short production life and not get used in the future for a re-release, saying that they did do RID Maximus so it wasn't that long ago they still had access to the mould.