Earlier quoted context omitted.
I doubt that more than 5% of the population knows what open source means.
It doesn't matter how many know what open source means - they all use it in some manner after all. Take away open source and there would barely be a large tech company left standing.
The downstream effects of something being open source might acquire users, but being open source in of itself doesn't do anything except for a very tiny slice of the population. I'd say (in the US) more than half of the software developers I know use an Apple phone despite Android being much more open.
Whenever I'm on HN I feel like most of the posters here live in a bubble where they think most people are anywhere near as tech literate as they are. (You can really feel how this forum is SF-coded).