Automotive electric starters are much more expensive than a hand crank but the hand crank also disappeared. 
The choice for manufacturers was the same; offer a QWERTY layout or go out of business.
When Graphical User Interface (point and click) replaced command line interface, home computers sold fast enough to establish the home computer industry.
That's a fast adoption rate. Fast enough to cause IBM, the largest computer and software manufacturer to lose almost all its desktop computer market share.

Since 2004, just three years later, the iPod line has dominated digital music player sales in the USA, with over 90% of the market for hard-drive based players and over 70% of the market for all types of players. That’s a fast adoption rate.
It was said that a physical keyboard and multiple products are necessary in order to be competitive. In just over two years the iPhone has captured over 30% of the USA market. That’s a fast adoption rate.