> One of the most impressive thing about Vue.js was the ability of the framework to enter a field saturated with dozens of options, that was becoming dominated by a well-resourced oligopoly (Angular, React), and still win over developers jaded from Javascript-fatigue.

When it comes to simple solutions that do no require a build step, the field is not that crowded. A built step should be optional, not necessary to use a front-end library. With Angular you start with the CLI, with React you need to compile JSX files, ...

Angular 1 didn't succeed because it needed a build step or a third party language, it succeeded because it provided a smooth upgrade path from jQuery based apps. The Angular team forgot what made Angular popular with their "enterprise framework".