Satoshi, in his invention of the blockchain, had given us the inch, what is preventing other bodies or organization from taking the ell? Does it mean no coin hosted on the blockchain will gain mass adoption enough to bypass the users of bitcoin?
That's not what it mean. The idea was to make Bitcoin decentralized as much as possible so that organization and the government wont have control over it just like they do with fiat currency.
The government own billions of population, and by setting her face against bitcoin is a competitor, but doesn't seem to prove that they're a top bitcoin competitor without having a downward course in the process. Last question please forgive me, what stops them from building a coin on the block chain that'll bypass the total sum of bitcoin users, and regulate it?
Bitcoin never has a competitor, it's only a competitor in the mind of governments, people, organizations, and business owners that see it as a threat to their centralization power due to Bitcoin being decentralized.