Cilo and the Economics of QWERTY (1985)
utdallas.edu
utdallas.edu
Everybody else around me was still using AZERTY, but it just made sense to switch. I haven't looked bad ever since, except I'm now using the US QWERTY as the accents in the 3rd level (using the control keys for the 3rd level, and caps as a control key) are even easier.
Is QWERTY perfectible? Yes. It QWERTY good enough? Yes too, even for French.
So with the network effects, bothering with anything else is a waste of time and money.