However - recently I've found G Search is getting steadily worse. They've made UX changes that make it harder to view cached pages, and it seems to ignore search operators frequently.
This is the biggest foothold to their dominance. YouTube, Gmail, Maps and everything else is in a supporting role to this core product.
Who is actively working on this and what is proving so challenging? What is stopping us from creating a viable Google clone, with the same level of high quality results?