They would have to triple-quintuple-backflip-down on "open." So, maybe? It depends on how much value is being created besides the code, in squishier parts of the business like service, support, pricing models, marketing, and so on.

But it's moot, since Apache Lucene is part of the Apache Software Foundation and has much stronger promises about its licensing and governance. Which is not a small reason why Lucene is the de facto standard for search technology.