These successful economic systems are still based on private ownership rights and the right to assemble (in this context the right to form business partnerships with low exit costs). In other words: the core capitalist building blocks.
That's like saying anything with four tires and a motor is a sedan. Name economic systems (including socialism) have the right to create businesses and own property. Capitalism is ownership of private ventures by an investment class who reap the profits (paying the employees as little as possible); socialism is when companies are owned collectively (most may be owned by employees, some may be owned nationally). Everything else is unrelated.
