being high ranked doesn't mean it will be high ranked forever. there are some cases that seemed to show that these high ranked coin just doesn't have the capability to climb back up again because
it was quite literally being abandoned by anyone who wanna invests.
people just prefer investing in newer coins that still have relatively low market capitalisation that just have better potential with disregarding all these formerly high rank coin so couldn't really determine the upcoming
altcoin season based on these high ranked coin, after all there's always change of position.
There are many old top coins that has shared the same fate as this. They can't succeed on climbing back into the ranks again because of the reason that new projects are better and has the modern solution to problems. Basically new coins revised and improve the old coins and the old coins can't catch up with the development of their competitor. Though there are old top altcoins that are still strong till today and competitors can't beat them knowing that they have a full support of their own community.
I think that's mainly because they die, the development on them dies and that's the issue. This is the eternal discussion with crypto currencies, the new ones have an owner, literally someone at the top, and makes all the money and we are paying them to create this token, which is automatically a scam to me, I do not see any other way, however those are the ones that keep on developing and getting better these days, look at top 20 and how many of them have a creator, nearly half of them has it.
Whereas old ones have no creator, so more decentralized, and not a scam, and legit, but because there is nobody developing it further, it takes years before we could see something changing and that seems to be the problem with them and unfortunately a serious issue.