Well, UI has been component driven forever - although we faltered on Web UIs. For instance, the entire control library in late 90s Visual Basic were components,

Well, UI has been component driven forever - although we faltered on Web UIs. For instance, the entire control library in late 90s Visual Basic were components, and people would build re-usable custom components and forms just like you would on React. It went even beyond that - need a Telephony connection or TCP Listener? Drag a TCP component on to your application surface and set some props visually (like port number). It really was that easy. We haven't peaked. If you leave out the closed-source nature of the Microsoft dominated tech scene, the tech from the 90s is arguably better than what we have now.