I see alot of altcoins and tokens been introduced into the market every day and I keep wondering if that is how this industry will keep growing. The number of altcoins does not translate to increase in the over all market capitalization of the cryptocurrencies market and it that means that some of the coins we currently have in the market is not needed!
You are right!
Many new coins are only copies from existing coins or not useful coins at all. Many projects are also dying, when devs don't find solutions for it. Only very few coins will be succesfuly when devs find solutions and keep developing it for more use cases.