NO!
Ethereum is The Most Promising Blockchain Platform.
At the moment, there are other blockchain networks that are trying to replace Ethereum, or at least be a real competitor to Ethereum’s dominance. EOS, Tron or NEO are starting to offer similar services like Ethereum, and in the future could be widely adopted. But at the moment, the results have been not so clear. Ethereum’s cryptocurrency is the second most important in the market, developers are still work on that network, and other platforms are not able to replace or even challenge it.