[khedoros]

Let's get closer to comparing apples to apples. Every one of my laptops has lost manufacturer support 1-3 years after I got them...but even my 13 year old laptop will run a current Linux build.

Every one of my phones has lost manufacturer support 1-3 years after I got them...but my 5 year old Galaxy Nexus still has Cyanogenmod builds being released for it (based on Marshmallow).

With the timelines of when these different markets began, I think that's a fair comparison. Manufacturers want to maintain as few models as possible, but the community often does the work to provide extended support time.