To defend them if their plan would ever backfire, that's NATO's obligation by treaty..
You should probably re-read the treaty if you think that's how it works. If a NATO member is the aggressor in a war other members are not obligated to defend it from the consequences of that aggression.
Also:
but as it stands now there is little that stops Turkey from become a member of the EU and tap into their markets as well..
I'm pretty sure that you are only taking a piss and having a laugh with your "analysis".