There are ways to do hostile takeovers over private business, but they aren't called hostile takeovers. If somebody loaned the previous owners money, and they used the business as collateral, they could have lost it through bankruptcy or foreclosure. That would still count as "more to the story" in my book.
I'm pretty sure the WTBS could collect licensing fees on its logo without jeopardizing their tax free status. It's possible they leaned on the owners and forced a sale to the new owners. In fact, I suspect they are called fees or royalties or something from all of these businesses selling JW related stuff. If they aren't, they're even stupider than we think.