Among other reasons, you have to also consider the “winner-takes-all” type of network effect here: any new platform, however great the hardware & tools might be, will today have an extremely hard time luring developers to it’s non-existent user base, while at the same time users won’t be as attracted to the platform due to the lack of apps.

This is a vicious cycle for newcomers, and at the same time a virtuous cycle for the incumbent(s), further cementing their dominant position.