i think altcoins should focus more on technology sector of the economy, with this they will attract more investors and users
You are right,many altcoins are just created for nothing but pump and dump,developers should start taking advantage of future techs and build projects based on real working products for demand to be available for coins and tokens.
Im less worried about this because with time new investors will become smarter and they will only invest on altcoins that are useful,its already happening