We are stuck with what we have available to us for interconnects because of standards.
We know, for example, that a BNC connector is far superior to an RCA connector.
We also know that a modern fiber optic cable blows the socks of any digital interface made.
Yet, we cannot use what works best because that would mean a closed loop system. Mix and match between different company offerings? Nope. No standards.
So, we stick with what we have and call it good.
Standards are great for interconnectivity between disparate company offerings. Without them we'd never have wireless connections, or a phone system, or computers.
On the other hand, the good comes with the bad. We can't really live in this modern world without them, but it's probably good to note if the world revolved around audiophiles, there's be a different set of standards.