I didn't know that. I just read about it and found that the company that took over Audacity is Muse, who makes MuseScore, which I also happen to use for sheet music. I've been using both for more than 15 years. It's great software, constantly improving.
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Audacity source code uses a GPL3 license. This allows people to charge for the software, but the source code must always be provided. So if the new owners get too greedy, the community will probably fork and maintain an open source free version.