I believe the real estate market in Israel is (or used to be) structured differently than in the States. Because the Medinah didn’t want people to run when trouble arose a rental market was dissuaded. Perhaps someone here can fill in the details as I’m not sure exactly how.
Unfortunately many people here live hand to mouth and can’t mangage to save up. It’s a mindset as well as a result of the high cost of living and high living standard. Waiting to get married would be disastrous. Although fundraising is not preferred, it’s probably better than starting a new home with credit card debt.
There’s a reason “Hachnasas Kallah” is rewarded in this world and the world to come. It’s literally a life saver/creator. The first mitvah in the Torah is nothing to sneeze at either.