Because the models are so much worse that people aren't using them.
Philosophical battles don't pay the bills and for most of us they aren't fun.
There have been periods of my life where I stubbornly persisted using something inferior for various reasons - maybe I was passionate about it, maybe I wanted it to exist and was willing to spend my time debugging and offer feedback - but there a finite number of hours in my life and often I'd much rather pay for something that works well than throw my heart, soul, time, and blood pressure at something that will only give me pain.
Because the models are so much worse that people aren't using them.
Philosophical battles don't pay the bills and for most of us they aren't fun.
There have been periods of my life where I stubbornly persisted using something inferior for various reasons - maybe I was passionate about it, maybe I wanted it to exist and was willing to spend my time debugging and offer feedback - but there a finite number of hours in my life and often I'd much rather pay for something that works well than throw my heart, soul, time, and blood pressure at something that will only give me pain.