Some of the "incidentally collected" intelligence may be more valuable to Israeli intelligence than it is to Morocco, say, a Macron text with his opinion on the JCPA, or what he knows about a mysterious explosion at an Iranian nuclear facility. They have plausible deniability in that a client state performed the targeting, with a "private company" executing, and the are shocked to learn of this spying and "need to get to the bottom of it".

Having a hot mic on a world leader 24/7, and being able to blame someone else for it is invaluable.