Startup idea: Company that cheaply sets up individuals/small companies to evade taxes in the same way big corporations do. You pay a subscription fee or something and they fill out the returns and set up a PO Box in Bermuda or whatever.
I will say that this seems like a company that should be started by lawyers and not programmers though.
For small companies with a single office etc., that is all that an offshore tax structure is.
The point is that when you structure these things, you don't want anybody to notice and you want to be a small target. Being a client of a startup whose intended purpose is to minimize your tax bill is the opposite of remaining unnoticed.