Unless every country agrees with that we won’t see that happening.
Plus appraising privately owned companies is a pretty hard thing to do and it’s unrealistic to do every year.
Just have a progressively increasing tax system and make it so the system doesn’t allow you to take personal loans with stock as collateral. The entire US is so loan based and built so people consume as much as possible. Everybody who choses to use a creditcard when a normal bankcard could have worked is increasing this issue.
Most countries already have a budget deficit or at least they generally will when they start increasing the social security budget. So when the US starts to really fund a social security system taxes will increase. If you calculate the marginal tax income (so tax paid + the missed social security others get) it means that a lot will see a tax increase as well.