Alpine Linux swaps out GNU libc, GNU coreutils, and systemd for musl, BusyBox, and OpenRC, which have weaker licensing (MIT, GPLv2-only, and 2-clause BSD respectively, vs. GPLv3+ for the GNU stuff and LGPLv2.1+ for systemd). Part of the reason for it is to be lighter and smaller to be more useful for embedded systems and containers, but it also has the effect of making it more attractive to corporate exploitation.
In general, the more popular permissively-licensed stuff gets compared to strong-copyleft stuff, the easier it is for corporate bad actors to do things like TiVoize it or go closed-source entirely.