I'd love to know how they manage to scale such high quality service. They say they use "top-tier executive assistants and concierges", but it's hard to scale hi

I'd love to know how they manage to scale such high quality service. They say they use "top-tier executive assistants and concierges", but it's hard to scale high-quality employees. How does it differ from other concierge services, such as the one connected to American Express cards? What have others typically done well and poorly, and how does Magic+ overcome the limitations?