It's not normally a very large issue, but I really don't like it. Most companies on the exchange makes money, and those who are not on the exchange are taxed on their assets. So in most cases it works out, but not always.
Usually owners use dividends to withdraw money to pay the tax, but that means even more tax as you have to pay tax on the dividends too.
The right side wants to remove the tax on investments, and maybe compensate by increasing the corporate tax. That way the tax on the annual result will be a bit higher, but there will be no wealth tax. This also levels the playing ground when it comes to Norwegian and foreign investors as the tax won't be based on where the owner is from.