That's not what I said though, is it? Not much point attacking a straw man argument. If Scotland voted to leave the UK, it'd almost certainly need to go through the normal accession process. That's unlikely to happen until Scotland had formally left. Even if the EU agreed to start negotiating immediately after the vote, it's still questionable whether it'd be complete by the time that it left the UK.

I don't disagree that it has the things you've listed. The question is - why would a company choose Scotland over Ireland - or even any of the Nordics - when it'll be have political risk for years after independence. Pretty much the only thing unifying the SNP at the moment is independence - post-independence you'd likely see a split into multiple parties.