I mean, why can't (or don't) we use those for things like docker images, npm registries and the like. All this centralised dependence talk is frustrating (it's

I mean, why can't (or don't) we use those for things like docker images, npm registries and the like. All this centralised dependence talk is frustrating (it's expensive, no free lunch etc;) when it's largely been a solved problem for decades.