The more advanced the crypto world, the more new projects compete with different concepts because they adapt to the modern era. Many altcoins or large projects are dim due to the lack of following the modern era. Investors move to other projects because of the potential needed, if there is a lack of community potential and others. Altcoins tend to decline if the project founders are less innovative
yes, who's investors are experienced in the market they will never buy back-dated project tokens, this is AI and highly updated technologies era, so new projects are coming with new technologies so peoples left from old projects and invest in new projects which developed with new concept. old project are going to disappearing day by day.