Ethereum isn't supposed to be money (though it can be), it's fuel you use for doing other things. Do people use less oil because it's deflationary and gets consumed when used? No, because it's useful now.
The most likely end game for Ethereum is being a replacement for all backend financial systems. Instead of having to hire teams of people to verify things or integrate various legacy systems together, everyone can build on one neutral platform and pay a little ETH as the fee for using it.
The most likely end game for Ethereum is being a replacement for all backend financial systems. Instead of having to hire teams of people to verify things or integrate various legacy systems together, everyone can build on one neutral platform and pay a little ETH as the fee for using it.