Its price will also tumble 99% .
People motives to get into crypto are clear. They want to subtract themselves from government policy of constantly printing money. BTC takes care of that and it's a 14 years brand which is extremely politically expensive to make illegal
On the other hand people are perfectly satisfied with their experience on Youtube, Amazon, Google, Facebook, Ebay, JPMorgan etc. which are the entities which Ethereum aims to disrupt