An unfortunate fact of life is that companies (not just Hasbro) very often promise that they will support things for ever and ever (especially when they announce new products competing with their old products) but later cut support anyway.
Its not even necessarily dishonesty. At the time the promise is made the people making it might well mean it. But, some time later, different people looking at the then current sales numbers will come to a different decision. At that later point the promise has little weight in the decision. It usually has SOME weight. Just not too much
However, 4e was successful, but NOT successful enough.
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However, 4e was successful, but NOT successful enough.
Where is the source for this?
Sometime around 2005ish, Hasbro made an internal decision to divide its businesses into two categories. Core brands, which had more than $50 million in annual sales, and had a growth path towards $100 million annual sales, and Non-Core brands, which didn't.
Under Goldner, the Core Brands would be the tentpoles of the company. They would be exploited across a range of media with an eye towards major motion pictures, following the path Transformers had blazed. Goldner saw what happened to Marvel when they re-oriented their company from a publisher of comic books to a brand building factory (their market capitalization increased by something like 2 billion dollars). He wanted to replicate that at Hasbro.
Core Brands would get the financing they requested for development of their businesses (within reason). Non-Core brands would not. They would be allowed to rise & fall with the overall toy market on their own merits without a lot of marketing or development support. In fact, many Non-Core brands would simply be mothballed - allowed to go dormant for some number of years until the company was ready to take them down off the shelf and try to revive them for a new generation of kids.
Sometime around 2006, the D&D team made a big presentation to the Hasbro senior management on how they could take D&D up to the $50 million level and potentially keep growing it. The core of that plan was a synergistic relationship between the tabletop game and what came to be known as DDI. At the time Hasbro didn't have the rights to do an MMO for D&D, so DDI was the next best thing. The Wizards team produced figures showing that there were millions of people playing D&D and that if they could move a moderate fraction of those people to DDI, they would achieve their revenue goals. Then DDI could be expanded over time and if/when Hasbro recovered the video gaming rights, it could be used as a platform to launch a true D&D MMO, which could take them over $100 million/year.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.