Because they are the best at spying in the world by far, and are willing to splash the cash. They're what Silicon Valley would have been if it kept doing government contracts instead of just selling ads.
If Mossad is willing to give you a hundred million to make your startup a spyware company, you're obviously going to agree.
If Mossad is willing to give you a hundred million to make your startup a spyware company, you're obviously going to agree.