It's worth considering that money that isn't going to mandatory-contribution retirement schemes (as in many union jobs, or government retirement schemes) is fre

It's worth considering that money that isn't going to mandatory-contribution retirement schemes (as in many union jobs, or government retirement schemes) is freed up to put in one's own retirement account... or to use to buy better housing (in a better school district, say) than one would otherwise be able. Get a few defectors who choose to do this and suddenly the housing you can get without sacrificing money that should be going into a retirement account is worse than it would have been if no-one had that option, so it gets more and more tempting/necessary to do it.