You may as well ask, "Gee how can we use marketing to entice people using food banks to shop at Waitrose instead? All we need to do is change their mindset!!" 
It has zero to do with "enticing" or "saving." It's not some uncool thing like going to the dentist we need to be talked into. There is no magical "marketing" trick that can convince people *to do what they desperately want to do but cannot afford."
I don't know anyone who is not desperate to save to buy their own flat (not a house - a one-bedroom flat is the highest of dreams!) but frankly for most of us that's like being told we should save up to buy the moon.
I am incredibly fortunate that my parents own their home and I'm an only child. There's very little chance I'd ever get on the property ladder without inheriting. It is simply a fact that with my current job/career and disability status it is extremely unlikely I would ever be eligible for a mortgage. I had to lie and put a parent down just to be approved to rent a shitty 1-bed flat (the credit check for my current flat demanded proof that prospective tenants have minimum 3 months' rent in savings plus deposit plus first month's rent).
The average price for a studio flat in the area I have to live in for work and to be near my family and doctors is £150,000. And I could not live in a studio flat, I lived in bedsits for years and it damaged my mental health. But even a down payment for a studio would be more than my annual salary and I have to spend most of my salary on rent already so what am I to save? If I started earning much more I'd get hit with £20,000 of student debt.
I already save every spare penny, to be able to cover the (£2k) cost of moving which you often have to do regularly when renting, and to have a financial cushion if the work dries up or I get too sick to be able to work again. That's what the small amount I am able to save is saved for. Not for "experiences" or jetsetting.
And I'm doing really well, comparatively. I lived for years on £20 a week. Scrimping every penny. For many of us we could save till Doomsday, eat dirt and never go out, and still not be able to ever afford a home. If your salary barely covers your rent there's no marketing in the world that's going to magic up disposable income to put in savings.
I don't know anyone born up to 1993 who doesn't own their own house.
I don't know a single person born before about 1980 who does, apart from a couple who inherited.