I was just about to point this out but you beat me to it, i have to laugh at all these posts from people who see themselfs as experts on Ethereum but still do not actually understand the Ethereum core and how it was designed.
Fomo happens all coins, but the underlying technology in Ethereum is amazing, I remember reading the whitepaper before Ethereum was even built and said to myself theres no way they can pull it off, fast forward a few years and here we are. The development is consistant and everytime Vitalik delivers what he proposes. It is for this fact that I bought a small portion of Ethereum and continue to mine it, but make no misteak its a different beast to bitcoin and for different use.
Thirdly, what happens when the price of GAS gets too expensive and the network becomes uncompetitive ? One of 2 things:
a) other smart contract networks start appearing which are more competitively priced and featured (since they have the advantage of watching the mistakes in the first one)
b) the Ethereum network simply issues more GAS tokens to lower the transaction fee to a competitive level (that's my assumption but better confirm this as I'm not quite sure about how this mechanism works)
GAS is just a way to represent the cost of transaction independent of ETH price right? If ETH price increases too much, to let's say $1,000, it's possible to reduce gasPrice, so I don't see this scenario you describe of the Ethereum network becoming uncompetitive because of ETH price.