If they are 75%, you cant assume that the 25% will work like dogs , serve in the army and do whatever the majority will want without a fight.
At 75% you will need charedi doctors, Charedi bus drivers, charedi construction workers, charedi farmers , charedi policemen and charedi soldiers etc.
ok, let’s take it that there will be 75% chareidi, and let’s makke it a given that the chareidim won’t serve in the army unless drastic measures are taken (no women singers shomer shabbos, shomer kashrus badatz) the only other option is that there will be an amendment to the law that you don’t need to work in the army in order to get a job
do you have any better ideas? (and no, cutting funding, etc will only make it worse)
additionally when it is 75% of the population then they will elect a religious cabinet that will implement something totally drastic