The people in charge of the distro. Governance structures vary. And sometimes it's not just about who gets to decide, but also, the technical work required to do it. People need to put in the work to make Rust applications packageable according to the distro's standards. YMMV.
This. And at some point enough of these alternatives might accumulate that a new distro will form using only the new tools. The issue is that most people don’t realize just how entrenched the existing tools are. They are a part of cross distro standards because often times they are used for scripting. Imagine a distro that decided to not ship ls in favor of exa. Ok it’s own this isn’t a problem at all. But combined with the overwhelming amount of FOSS you might want to install on top of your distro, you would suddenly need ls anyways.
Debian in particular has an entire alternatives system. Nothing stops somebody from creating the packages `nice_tools` and `select_nice_tools` that will install those tools and make them the default binaries for the commands.
