Companies will do everything that bitcoin doesn’t do. And anything that Bitcoin NEEDS to do, eventually it will do, too.
We don’t need multiple cryptocurrencies. We need an unmanipulated, free market price signal for money. Everything else will derive off of that function performed by Bitcoin.
ETH is an unregistered security and if - for some reason - the SEC doesn’t regulate it as such then you will know that it is a government subsidized alternative to Bitcoin meant to slow Bitcoin adoption.