I found a video of Mark Cuban explaining this:
https://youtu.be/QEoBeIdwuRgDo you think Ethereum has potential to become store of value? Why or why not?
No, it is not intended as a store of value, simply as a utility token backed up by the network that is able to compute in exchange for a fee. At this point the fee is so high that is not really worth using it.
In the future, the yield of staking will be a market commodity that will be self regulated and open to competition, thus price is unlikely to increase.