I haven't thought about that yet, but if many believe that ethereum or EOS, the next bitcoin will certainly take longer or years if they want to replace bitcoin. try to see, the price comparison is still far away, so for now don't ever compare it with bitcoin. without bitcoin, altcoin is nothing.
Yes, I strongly agree, Bitcoin is currently like a very expensive gem, no other Altcoin can defeat the dominance of Bitcoin, it takes a very long time to beat that Bitcoin. Because BItcoin has been accepted by everyone in this world.
Yes i too agree, Altcoins have to be most curious on the coins in terms of development of new coins using BlockChain and coins to be scam free. If these qualities are there in altcoins surely it will develop and be the good competitor in the crypto market. Few Altcoins are growing in the market like ETH,Ripple,NEO etc has some potential after BTC to attract investors.