One thing they had going for them is that the people who moved (and move) to Israel come from a number of different language backgrounds, so it wasn't the case

One thing they had going for them is that the people who moved (and move) to Israel come from a number of different language backgrounds, so it wasn't the case of make everyone who speaks language A now instead speak language B (as would the the case with Gaelic in Scotland, and was with Irish in Ireland) so much as choose a language all the speakers of A, B, an C can agree to learn and use so that can all talk to each other.