Since I have last been around value went up tremendously but it was down for a bit because of what I believe to be the silk road thing
Silk Road had very little effect and it recovered extremely quickly. The bear market's biggest cause was the gradual collapse of the exchange Mt. Gox which handled the majority of trading volume at the time. Other darknet markets tend to just replace the ones which collapse.
Is the thing going on with China an indicator that if the same thing happens again we can get Bitcoin going even stronger?
The Silk Road and Mt. Gox collapses were temporary problems because people can always move to a new exchange or new darknet market. Moving to a new country where there are fewer regulations is quite a different matter. Furthermore, people tend to ignore the November fork, which is a much larger potentially bearish event that's coming up quite soon.
There's no point trying to recognise exact patterns of events because they don't last forever. However, I do believe that Chinese problems are just hiccups to regulation being handled properly, in which case you might have a point.
All marketing and advertising I believe is free-licensed or whatever the business term wants you to call it but is there someone out there somewhere that will impede someone from creating a business to help support and get the word out there?
If you're running a business, you'll have to comply with all the necessary regulations in your country. It has no relation to Bitcoin's decentralisation, because centralised companies are not the same.