This is the risk that you have to take when investing in a new coin there are no guarantees that the developers are dedicated to making their project top notch or competitive in the market, we have seen that on coins that were launch back 2018 and 2019 most of them are gone and out of the market, and there are still coins like that now.
the developers' dedication doesn't change anything if the coin itself is garbage. look at all these bitcoin copies that are more than a hundred of them, some have very dedicated developers that are also throwing a lot of money at their shitcoin but it hasn't been able to grow for many years and still remains a shitcoin and their blocks remain empty because nobody uses them.