Many new altcoins will die in the future because there won't be many investors investing money on them and as we know it we have many scammers here who will keep creating useless tokens and coins, if you are a developer and you think you are serious enough then try as hard as possible to come out with something new and different, enough of repetitive projects and same old ideas
Bring in something NEW or don't bother at all
But on a more serious note, do we actually think it will end? Am not justifying it, but however looking at the nature of things, you will agree that most people don't care once they see IEO on top exchanges they will run to invest then sell off immediately to earn more, so to some people once it affords them the opportunity to increase their holdings in BTC etc, they will invest. You see, once a project comes out, whether copied idea, copied whitepaper, repetitive project and/or old idea, and it is filled with hype, people will throw caution to the wind and rush in just to get a glimpse of their own gains, most times it works and most times it doesn't, at least we have seen several cases like that. So in essence, I'm against repetitive projects just like you, but yet ending them might be difficult hence let's find it more appropriate going for those projects whose team aren't after immediate gains but long term growth.