Answer: It is true that many coins with real revenue have gone to 0 against the dollar, such as Luna, Bitconnect, and FTT. However, it is difficult to find a successful revenue-based protocol in the top 50. This is because the top 50 cryptocurrencies are often determined by market capitalization, which is driven by speculation rather than revenue. As such, it is more likely that successful revenue-based protocols will be found in the lower rankings of the market. To be successful, these protocols must have a strong business model, a dedicated team, and a reliable source of revenue. Additionally, they must have a strong community of supporters who can help spread the word and increase the value of the coin. With these factors in place, it is possible for a revenue-based coin to rise in the rankings and become a top 50 cryptocurrency.