It is not a question of 20 – 30 years. It is the current situation. How many people in Klei Kodesh WITH JOBS commit themselves to a number of years of support (because they want to marry off their kids) and at the same time are collecting money for the chasunah. If they can’t afford one wedding, how will they support a few daughters support at the same time?
I believe the only solution is to make the young couple mary and survive ON THEIR OWN. Like has been done for past 5725 years. Suddenly, if the couple need to marry themselves off, diamond rings won’t be so popular, and Shul halls will be in demand and a chosson whose friend plays the harmonica will be a real catch.
The problem is that that the one on the recieving end gives NOTHING and gives up nothing and expects EVERYTHING. This lifestyle leads to disaster, as ones dreams can never be fulfilled, unless he gives something.