This kind of thing happens when the base system is ubiquitous and therefore hard to change. It's easier to layer something on top of the base, where people can "opt in" and there's a large preexisting compatible audience.
Changing the base layer itself at a minimum requires people to upgrade, and now you don't have that advantage of the preexisting audience anymore. If your improvement requires a breaking change, then you're in a real pickle. So people will stack on more and more until it becomes more or less unbearable.
Changing the base layer itself at a minimum requires people to upgrade, and now you don't have that advantage of the preexisting audience anymore. If your improvement requires a breaking change, then you're in a real pickle. So people will stack on more and more until it becomes more or less unbearable.