That future isn't possible, because despite all you people lying to claim otherwise, there has never been any point where software exists and "free software" was not regularly used to refer to software that did not cost money, regardless of license. Every single App Store out there uses "free" to refer to propriety software today, because it's free.
Free software has multiple established meanings. There's a reason many are conceding their war on the English language and starting to refer to such software as "libre", not "free", and it's because there has never been any point where they actually dominated the term "free software" like they're lying and telling you they did.