(.....)
And also can we see another top project in the rank of 1 to 20 failed like that of Luna?
Big YES. This is already proven over time. We cannot say it is failed but it is slowly going to fail or be replaced by other quality projects or new projects. For example forked of Bitcoin, like Bitcoin cash, Bitcoin SV, and many more. At first they are on top, full of hype, pumps and dumps everywhere but after that, they are slowly going down.
And this is not rare at all, even in stocks this happens, there are stocks that were very popular decades ago and now if you look at the top stocks in the market you will not see the same companies anymore.
And since this market moves way faster than the stock market then it is natural that the coins which are at the top today will not be the same ones we have a few years down the line, and it is easy to see this is the case if we take a look at the coins which were at the top at the beginning of each year and see how they have been changing over the years.