Does it apply to conceding the last ball in an early game (without breaking down your cue)?An example is an example. I think the first sentence stands on its own. A single example must not be taken to be the entire universe of possibilities. On the other hand, it is dangerous for rules writers to include examples because some will take the examples to be the universe.
That specific example was included because some cheats will try to shark their opponent by starting to put their equipment away while their opponent seems likely to run out.
pj
chgo