The "market cap" of the top 100 alts together are not even close (<10%, and from this 10% LTC takes 5%) of the BTC market cap. Apart from NXT (and it's clones) none of them offers any significant improvement over bitcoin. None of the alts have any significant real world services (you can't even buy a single banana or a gallon of petrol for DRK). Until an alt doesn't have good services - good means services what you need in you daily routine - all of the stuff above are just dreaming.