* Continued upstream development of core system software.
* A host system that is stable and up-to-date (which you need to run your container manager).
* Container images which have up-to-date software, timely security patches, and reasonable security policies.
Distributions are the only members of the ecosystem which actually solve these problems in any meaningful way. It's a shame that we seem to be boring (or even vestigial) at this point despite all of this new software still requiring our work in order to actually run.