When did Web3 start?

Could you please elaborate on the origins of Web3? I'm curious to know when this concept first emerged and what were the initial discussions or ideas surrounding it? Was there a specific event or milestone that marked the beginning of Web3, or did it evolve gradually over time? Additionally, what were some of the early proponents or influencers who contributed to the development of this concept? I'm interested in understanding the historical context and the early stages of Web3's emergence.