This requires hiring Arabic speakers, who are available in Israel. Greed apparently overrides Arab-Israeli differences in this area.
(Big 15-part expose in the Times of Israel: "The Wolves of Tel Aviv".[1] Summary: binary options are bets against the house, not against other speculators. Binary options "brokers" are not really brokers, they're shills for the house. Worse, the house cheats, tweaking the prices to make customers lose. Even if customers win, the house won't pay up. 80% of investors lose all their money. This brings in over 0.7% of Israel's GDP, and that's just the part that pays taxes.)
[1] http://www.timesofisrael.com/the-wolves-of-tel-aviv-israels-...