There has never been in the history of bitcoin that a hard fork bitcoin has ever become successful, the ones they did in the early days of bitcoin and the ones they did in the all-time high price of bitcoin to date have not reached the half potential of bitcoin
A hard fork does not necessarily imply creation of a new shitcoin, such as in the BCash fork. It is possible to implement a hard fork which the entire network agrees upon, which results in everyone staying on the main chain and no chain split. A hard fork simply means that the rules are being relaxed, and something which was previously invalid is now considered valid.