Over the past years hundreds of new crypto currencies came on the market. Most of them are just copy cat or only have a few features that make them different.
Only a handful of those crypto currencies are real outliers. Those unique ones disrupt their industry just like bitcoin did with the financial sector.
There is a lot of interesting project coming on Ethereum soon that could make Ethereum adoption go even higher.
Of course! You are right on that and that's why I discussed only three cryptocurrencies here! I just hope my writing can give you some clues to understand the crypto world you are in!