Software to predict*1 the location of installed files and directories, and
Users to predict the location of installed files and directories.
Specifying guiding principles for each area of the filesystem,
Specifying the minimum files and directories required,
Enumerating exceptions to the principles, and
Enumerating specific cases where there has been historical conflict.
Independent software suppliers to create applications which are FHS compliant, and work with distributions which are FHS complaint,
OS creators to provide systems which are FHS compliant, and
Users to understand and maintain the FHS compliance of a system.
Local placement of local files is a local issue, so FHS doesn't attempt to usurp*2 system administrators.
FHS addresses issues where file placements need to be coordinated betweeneen multiple parties such as local sites, distributions, applications, documentation, etc.