I think it'll aim at business travellers anyway. One-day returns EU-US are one example that will have high demand but there are a lot more profitable routes. Lo

I think it'll aim at business travellers anyway. One-day returns EU-US are one example that will have high demand but there are a lot more profitable routes. London-HKG is currently 12h direct, I bet a lot of companies would pay up significantly to reduce that. The difference with supersonic is close to an 8h workday in each direction.