the altcoins and all the tokens that currently exist have little to no chance of surviving the future because the main purpose of their creation was not to be a currency, instead they were created to make more money through trading. and unless this changes, we won't see any project worthwhile.
demand is not something you can create. what you call demand is a temporary hype where money pours into these coins with the hope that the investor can dump and get more out of it. more like gamble actually and it won't last long.