This is a business decision, not a personal decision. This decision was made when weighing up the value we can provide to the community and the value we can generate as a business against the costs of that value. Although we'd love to be able to allow the forum to continue to run as-is under someone else's control, the costs associated with that mean it unfortunately is not viable. The forum loses money and, as you're aware from the previous ownership transfer, there's a lot of complexity in terms of transferring ownership of data. The decision we've made is the best we can come up with in terms of balancing the community needs (retaining access to a decade of Minecraft history) vs. the business need.
And yes Fandom/Curse had something to do with it as they own the forum