What do you mean "can't", this is exactly what already happens in countries that already implement a wealth tax (eg, Switzerland). If you own a corporation that has assets worth millions, then the corporation is the asset that you're paying wealth taxes on (as part of your personal tax return).
Doesn't matter if the company is based abroad either, you'll still need to supply the companies balance sheet as part of your personal tax return. Last time I checked, the Swiss economy (unsurprisingly) has not come crashing down.
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What do you mean "can't", this is exactly what already happens in countries that already implement a wealth tax (eg, Switzerland). If you own a corporation that has assets worth millions, then the corporation is the asset that you're paying wealth taxes on (as part of your personal tax return).
Doesn't matter if the company is based abroad either, you'll still need to supply the companies balance sheet as part of your personal tax return. Last time I checked, the Swiss economy (unsurprisingly) has not come crashing down.
Tax dodging is the national sport of the Swiss. This is a horrendous example.