Jews don’t proselytize. I think it’s actually the best aspect of their religion: they never ring my door to talk to me about our lord and savior. More seriously they have this idea that more than coreligionaries they are a people: you are born into Judaism. Although you can convert to Judaism but it has to come from you and you have to study a lot and it is actually really hard. The few people who do it mostly do it to get married to a practicing Jew.

Then there is the historical context: Islam and Christianity expanded around the world through conquest, invasions and colonialism. When you are a people with no nation and therefore no army you can’t invade other territories.