Strange. I consider keeping things that you borrow to be asstistic.
It is.
However being passive-aggressive about things doesn't help either.
Asking for a borrowed cable back after the event where it was needed is resolving the issue. Some folks might have other things on their minds after a long night. Being polite and reminding them goes a long way to helping them out.
The other side of this is that if you truly believe your band members exist part and parcel to rip you off then please stay home and work on a nice road case to house all of your drama.