Before any speculation i would really love you to take a look at this post made by @DdmrDdmr i think is the best thing to do before all your market analysis. It is a very useful link which i may want you to follow the sequence then you would understand more better.
@DdmrDdmr please permit me to do this i would save this link for future use.
I know all this info allready really nothing new there i check databases all the time.