For me, altcoins and bitcoin will become closer and closer in value everyday.
Because altcoins do the exact same thing as BTC does, and more people realize that they can purchase more alt coins with the same amount of fiat to use at their company/organization.
So all coins will be approximately same in value in the future.
Although, all businesses can't accept 20 altcoins so it's more likely to there will be 2-3 major crypto-currencies and others are to be eliminated.
Why the mess with clones and using 2-3 crypto-currencies when one is enought. You can trade your altcoins to Bitcoin right before spending