Earlier quoted context omitted.
It's a bit like the Dvorak keyboard problem. It's slightly better, but too much of a hassle to bother with. You need something between 2x and 10x better to displace an entrenched incumbent.
I think a better music notation system would easily be at least 2x better for beginners. A rationalized system could mean 100% of kids learn to read and write music, and anyone could understand how to play an instrument like a piano from music (even if not able to do it at full speed). My point was that it could be 10x better, and it wouldn't lead to a switch. The decision-makers aren't the same as the people whom it…
Only a few of us could have told you what a major third or the circle of fifths was, but frankly, even that meager level of theory was useless for the immediate task of playing the same note at the same time as all the other second clarinets.