this question is being asked nearly every week and every one of you who ever asks this only starts topics like it because they have bought ethereum and want to get rich. you people think just because bitcoin has gone up to $10k+ that means any other shitcoin can also do the same!
but what you are forgetting is that bitcoin didn't rise by chance! it went up because it is useful. you can use bitcoin as a currency, it has real merchant adoption so it is actually doing something in the world.
in comparison ethereum does nothing. it is just a platform like 20 other platforms that offers smart contract features in a bad way actually, and it is only worth higher than the rest because it is advertised and pumped more.
additionally you are forgetting that bitcoin has 16.8 million coins in circulation and will stop at 21 million.
while ethereum has nearly 100 million and will never stop creating new supply.
in other words the following statement:
if you tell that to anyone who knows basic economy they will die of laughter
but what you are forgetting is that bitcoin didn't rise by chance! it went up because it is useful. you can use bitcoin as a currency, it has real merchant adoption so it is actually doing something in the world.
in comparison ethereum does nothing. it is just a platform like 20 other platforms that offers smart contract features in a bad way actually, and it is only worth higher than the rest because it is advertised and pumped more.
additionally you are forgetting that bitcoin has 16.8 million coins in circulation and will stop at 21 million.
while ethereum has nearly 100 million and will never stop creating new supply.
in other words the following statement:
Personally I see ETH taking the spot in the future ~ 5-10 years 
is basically saying that a coin with a huge supply and an unlimited supply can be worth higher than bitcoin with limited and small supply!if you tell that to anyone who knows basic economy they will die of laughter