Things should change according to the need of time. Bitcoin and Bitcoin cash implemented different techniques to solve the (same) problem and are working on independent ways.
As an open source project, there was no ownership of the coin. So to decide which chain would retain the name Bitcoin, it was the one with the highest hashrate, larger number of miners and community.
You can fork a open source project but you can't have it's original git or claim your fork is the original one.
But aren't there entities which are changing Bitcoin as we speak right at this moment like Blockstream? It seems like with their investors (such as master card / visa etc) have a significant opportunity to destroy the Bitcoin network by changing the code of it , can they not?
Agreed with @tsaroz, bitcoin adopts its development thru time. Imagine altcoins are beating them down thru Peer to peer attempt.
But IMO, it always bitcoin can retain its original purpose though BCH is a newer and improved on chain solution. In terms of price, If BCH can improved and develop the problem with scalability then good to pick BCH as it van grow more in the future even though its a fork of the original bitcoin.
Network effect is very powerful but getting it into the hands of the everyday consumer is a little difficult because people are wary of coins because they still value the coins value in Fiat.