you just listed all the reasons for ‘why not’. It’s absurd. Who would leave 800k in a bank acct doing nothing?
LTR ensures no tax on income outside the country. And it’s cheaper than a multi-entry non O-A. Plus no 90 day reporting, plus fast track at airports. Never see immigration or bank offices again.
No, I don’t believe so. capital gains are difficult to use in the equation as it’s a one off event. The income doesn’t need to be taxable. It just needs to be sustainable.
I think if you could demonstrate trading or similar that resulted in consistent income, you may be able to make a case. Reach out to the BOI either by phone or email and ask.