Quoted from Wickerman2:"They will have to prove they had adequate accommodation to be quarantined during their stay in the country."
This is a whole new airbnb category...
So, Israel is effectively turning off tourism. Not sure how big that industry is there but nobody is booking a vacation or even a business trip to Israel now.
It's a pretty big deal. Imagine booking a trip to go see the Holy Land, only to get there and be quarantined.