Gentoo for anything my I use a mouse with, Arch for everything else. I like Gentoo for the customization. For things where I want to run a service, Arch is my go to as it keeps working without drama. Anything complicated, Gentoo is better.

Or be the same but cheaper, but yes inertia is huge at the difference in market share

I use both for different purposes. Gentoo’s feature flags are the reason I wait for compiles, but only for computers a touch the keyboard with. Everything else gets Arch.