do you mean obtaining the means to pay for one’s needs, or obtaining from others the means to pay for one’s needs?
I don’t care how they get he money (honestly, of course). I strongly disagree with your apparent assumption that any newly married couole, even without either having a job or reasonable expectation of one, can get by financially without parental help.
The cost of the apartment is part of the total figure of their cost of living, and if there’s no reasonable mehalach in how they can fund it, how can they get married?