That's unlikely to work out well.

The U.S. is already an exception with its taxing of income generated by its citizens abroad.
A German doesn't need to pay German income tax if he lives (=60% or more of the year) in Monaco, for example.


It's more important to generate jobs anyway.
Think of a tax on international phone services. Call centre jobs would need to be moved to domestic locations and reliably put hundreds of thousands of unskilled people in labour.

Or end the structural nonsense of the financial sector ripping off the industrial sector and its shareholders. You need roughly a fourth more industrial output to meet your material consumption level. East Asians won't deliver goods for mere promises forever - sometime they'll demand a real payment and you don't want to experience a drop of a fifth of goods consumption in your society. That would be about twice as grave as the recent crisis and it would probably break much more.