Sort:  

This assumes that people on Bitcoin and Ethereum don't realize there are other cryptocurrencies out there. We already know that this is not the case.

value of Bitcoin and ethereum starts decreasing

Relative to what?
USD?

Even using USD as a unit of account is antiquated.
All crypto is going to increase in value relative to USD.

@edicted mark my words ethereum and Bitcoin will go to under $100 per coin one day

Words marked!