>Doing it every year would be infeasible.

In the Netherlands, there is an asset tax. Your assets (money, stocks, bonds, etc.) over a certain threshold are taxed 30% annually on an assumed investment gain of 4%, so effectively a 1.2% tax on everything over a threshold of a couple ten thousand euros.

I think the numbers are different this year, but nonetheless it certainly isn't infeasible.

Not that I'm a fan of it due to double taxation.