We can see these days that not all people know cryptocurrencies, if they do perhaps they have heard only about bitcoin, but without owning or having the experience of making any transactions.
Maybe altcoins will become popular within 3 years from now?
if the altcoin is able to defeat the popularity of bitcoin it might be easy to be famous, such as having progress in developing projects and having good programs. the large number of investors that enter will make it easier for altcoins to be famous because they have good prices on the market.