I was told that free would always win out.
Amazing what you can prove when you revise history. I'll quote it again, since you seem to have misread it the last time: "
All else ... being equal, free will win out over
quality nearly every single time."
The 1911 Britannica is neither equal, nor of a sufficiently superior quality. It is far too out of date, and therefore missing a critical amount of important information. And it's accessibility is not nearly the equal of Wikipedia. Such a comparison is ridiculous at best, and borders on disingenuous.
A legitimate comparision would be the current Britannica, since Wikipedia makes a pretense at a similar level of comprehensiveness. Columbia and Encarta, though more accurate due to the peer-reivew process, contain only "capsule" or brief articles; and do not attempt to provide extensive information beyond a simple precis. So a comparison there is not entirely appropriate either.
Interestingly, though Wikipedia does include a lot of material from other online encyclopediae, the open format still results in much of that information containing errors; or even outright misinformation and bias.
The value of an encyclopedia is not in how many people read it (if popularity was an indication of value, that would mean that Stephen King was of greater value to English-language literature than William Shakepspeare); but in the accuracy and extent of it's information. The Britannica is less popularly used because it requires a not-insubstantial sum to access more than a brief excerpt; whereas Wikipedia is more popular, not due to the quality of it's information, because it costs nothing to use. It's quite clear in both cases that you pretty much get what you pay for.