It is good to be open minded. But there are mainly two big players, Bitcoin and Ethereum. I can see some projects wanting to kill Ethereum, but no project is brave enough to even think to kill Bitcoin. In the end there will probably always be many cryptocurrencies for different uses, same as there are different fiat currencies. At least for now.
Open mind is the key for sure. I am not looking at it in terms of big/small players. There are some protocols which serve a particular niche which would not be here if it wasn't for bitcoin. These protocols will not be as big as bitcoin, but are useful nevertheless.
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