[beerlord]

Because consumers and developers do not want to support more than two operating systems. Even Windows failed with Windows Mobile.

The up and comer is KaiOS, used on super low-end phones in India. Its a version of the Firefox OS.

[laumars]

I personally think the issue is more with the OEMs wanting to close their hardware than it is with developers and consumers (not that Im suggesting your point doesn't also play a part)