Mozilla long ago made a deal with the devil, and there was never really a good long-term outcome. They have consistently failed to develop alternate revenue streams, even ones that they were well-positioned to capitalize on. Their VPN could have been built into the browser and powered by their own network. Instead it was (is?) a repackaged Mullvad. Which begs the question, why not just get mullvad directly at a lower price? Or choose a more capable option for a similar cost?