Apple likes to change the world.
The introduction of the iPhone in 2007 and the launch of the iPad in 2010 mainstreamed touchscreen phones and tablets, respectively. That was world-changing.
This change took place via products Apple makes — “computers,” if you will. Apple changed the world of computers.
More impressively, Apple once changed a world outside the computer industry: the music business, through iPod and iTunes, in the early 2000s.
Apple ripped music lovers away from CDs (pun intended) and got them to download their music instead. (Apple and iTunes later changed the world again by introducing podcasts.)
Transforming the music business was made possible by a single inconvenient truth: iTunes was cross-platform.