Exactly. Now that they own it, they can just roll back the license change and tap into the rest of the world doing the heavy lifting in terms of development. Hashicorp retired from that role when they changed the license.
Win win for IBM. They offer stability to their big corporate clients and they get to resell the work done by third parties. The BSL license is an obstacle to that because it means they have to reinvent wheels internally. Changing the license back means they can gut the R&D department at the price of a simple license change and focus instead on sales, support, and consulting.