I can't help but to disagree. Just look at Linux Distributions for an example proving you wrong, let alone things like TWRP; a recovery partition that with rela

I can't help but to disagree. Just look at Linux Distributions for an example proving you wrong, let alone things like TWRP; a recovery partition that with relatively little work builds and works on most any phone that will take it; or any of the big Android Distributions that deal with hundreds of phone models. A custom build of iOS would be nothing by comparison.