One has already been mentioned above. There are also some countries that don't tax some residents on income earned overseas (I'm thinking of Portugal, with its new 10-year scheme for immigrants, but there are other and doubtless better examples, too). I'm not disputing the general principle of what you said - simply mentioning that there are also some exceptions.
Thanks Xela, yes til new policies become general principles takes some time - although the grip gets noticeably tighter. So exemptions are welcome - as long as they`ll last. Could possibly name a few more - or pm me? Thanks