The machine I use is more advanced than your espresso machine.
It HAS a double boiler, and frothing wand. It makes a wide range of coffee’s, and it has its own grinder. That is why its called a bean to cup.
The quality of coffee is determined by the bean and the brewing unit.
It produces consistency, and a wider range of drinks than an espresso machine.
The strength and quantity is easily and consistently controlled.