I think there is yet another path: hyper specialization in one ludicrously specific niche no one else cares about or has good reason for not getting into. If you spend 10k hours perfecting something no one else even thought of trying, chances are you'll be the best in the world at it.
Can you give a specific example, though? Because generally, no competition means no demand, so while it might be satisfying to be best in the world at something, an obscure skill might not translate into financial success.
Since the field is currently successfully employing a million people there must be that many profitable pieces if you slice it correctly.