does two way symmetric communication real exist?

4 US model is about 4 type communications: publicity; public information; two way asymmetric comunication and two way symmetric communication. once a information public, it will follow the 4 US model way boardcast. publity ==> public information ==> two way asymmetric communication ==> two way symmetric communication. ==> two way asymmetric ==> public information ==> publity. sounds good, PR send some information and successfully interested public and company sell the product after. But, does two way asymmetric real exist? or does it enroll in the part of communication? the reason of communication is get feedback and fix the plan. to keep balance between company profit and consumer benefit. the feedback should influence policy a lot. but , it doesn't work. and the two way symmetric communication should not include.

The Da Vinci Code can be consider as a example. religions against publish it, but in business position, it sells. coca-cola PR crisis in 1977 in India can be consider as another example. India government ask coca-cola company public it's secret formula or leave India. coca-cola choose leave. Or, Blizzard company never sell it's product before it satisfy himself but not 5 years waited consumer. in fact, i can not find any example for a successful two way symmetric communication. it seemed two way symmetric communication runs in an other level, like a subsystem. company communication system is publicity, public information and two way asymmetric communication. consumer level is two way asymmetric communication and two way symmetric communication ( public to public ).

it is a fraud. PR public information and made an open zone for public discuss. and after that, it is a successful 4 US model communication. the 4 us model is wrong!