BTC are actually benefiting them (most of them)
Only the strongest survives! Lots of alts with similar features, we would see dominance by certain cryptocurrencies, some would just dies off
I agree with you. Bitcoin and some altcoins are greater than others and they will dominate the cryptocurrency. From my perspective, in the future, about 10 years later, there will be only 10 to 20 coins survive and other coins will be considered as trashcoin and will be vanished forever