Bumping the thread again, I have some new thoughts.
In theory, it should work with a UK LTD, but I can’t believe it’s legal.
So, YouTubers in Dubai - let’s say MoVlogs - have to pay 30% withholding tax on AdSense income. Why doesn’t he just establish a company in a country with a U.S. tax treaty? Or has he already done that?
My lawyer said because the only purpose of your UK LTD, or let's say Estonian OU, Georgian LLC is to avoid the withholding tax, it doesn't work that way, and certainly the IRS won't like it, you need to establish the management from the country of the company incorporation to make it legal.
BTW, Georgian LLC charges you 15% CT only when you distribute the dividends, so there are plenty of ways to optimize the taxes. It's like Estonia and Latvia.