This is similar to what happened back in the day when the developers wanted to activate the segwit upgrade and the miners decided to create their own coin, this created a lot of hype for bitcoin back then and this created a huge interest in buying bitcoin because you could get two coins for the price of one, and now we are seeing something very similar happening with ethereum, however I have my doubts that we will see the price to skyrocket as the market conditions do not seem to be conductive of such movement.
I am not sure if there will be an "ethereum cash" type of deal or "ethereumsatoshis vision" type of deal at all. Those things were created and got a bit of attention at first, but then they went down hard, they are nowhere to be found right now, which is a proof that people already realized what a mistake it is to buy them, and that means if anyone tries to go around ethereum, then they are going to lose money just like they did with bitcoin cash.
Of course, the early ones who got it for free made a bit of profit, but anyone after that lost money because it dropped when all else went up. Hence, ethereum is the only one and won't be getting any proper competition.
And you are right, however we must remember that we are in the market of cryptocurrencies, a market in which people invest in all kind of projects that have nothing behind them, so it is not difficult for me to believe that we are going to see a hard fork for ethereum and that at the beginning there is going to be a lot of speculation for that coin which will make it to go up in value, but eventually this interest is going to disappear as no one will actually use it for any kind of transaction online or offline.