JSX operates an entire airline as business-only. They use CRJ-900s, so not long-range, but there's no TSA (they are technically charter flights, you board at an FBO).
You could feasibly run major transatlantic routes once or twice a day like that.
You could feasibly run major transatlantic routes once or twice a day like that.
I'm not making a comment about the original topic, just the comment that operating an entire airline as business wasn't viable. Not on every route, no, but for the right route? Yeah, there are enough people who fly certain routes and will pay for a better seat that you could fill a plane with them.