The backbone is immigration. Because unless you curb that, you can throw every bit of money at the issue, but it's only going to continue, and people's wages aren't going to see much increase at all, it'll cost far too much as time goes on for it to be worth while and will lead to its privatisation. Whereas you curb immigration, you can then work on the other major issues without the worry of an ever increasing population, at least one that isn't increasing due to birth rates, but is artificially bloated.
