You may be interested in reading this post about the process of packaging Steam.

tl;dr: It’s mostly an annoyance reserved for packagers to deal with. Dynamically linked executables can be patched in a fairly universal fashion to work without FHS, so that’s the go-to approach. If the executable is statically linked, the package may have to ship a source patch instead. If the executable is statically linked & close-source, the packagers are forced to resort to simulating an FHS environment via chroot.

Nah, dump em’ to /tmp/ and let the user figure out the rest

[…] but that’s more of a commercial benefit I think

For me, this is the primary benefit of a rice cooker. Having warm, cheap, filling food on demand at any time is fantastic. I am so lazy and my little rice buddies are always ready to go when I can’t be bothered.