That definitely the end of Bitcoin because every banksters and goverments just want to shut Bitcoin down so if they held 90% of the Bitcoin . They will try to kill it for sure.
But in the opposite side, maybe they will try to help Bitcoin developing because it's their money and noone want to lose their money right ?
Yes its will be the end of bitcoin because the origin of creation of bitcoin is a peer to peer electronic currency without middleman
nowadays most of bitcoin is on the exchange not a peer to peer anymore