Depends how you interpret it. Could also be due to any of the following:
- low wages meaning lower contributions
- low investment returns
- changes to the tax system
- they started contributing signifiant amounts later in life due to other pressures
I'm just following the "system" here. Nothing fancy. I'm not in a situation where I can retire earlier. I could do it, but for that I'd have to make a ton of money, which implies competing with people which may be better at selling themselves than me. I'm afraid I wouldn't perform very well in such context.
I presume you mean you have to work until 67 if you rely on the state to fund your retirement?