The short answer is no. The Ethereum network is decentralized, and therefore no single entity can shut it down.
However, there are a few ways that the Ethereum network could be disrupted.
The first way is through a 51% attack. This is where an entity or group of entities controls more than half of the mining power on the network.
This would allow them to double spend coins, and essentially wreak havoc on the network. However, this is highly unlikely to happen, as it would require an enormous amount of resources and money to pull off.
Another way the Ethereum network could be disrupted is through a hard fork. This is where the software that runs the network is updated in such a way that it is incompatible with the old software.
This would split the network into two, and could potentially lead to one network being shut down. However, this is also unlikely to happen, as it would require a majority of users to switch to the new software, which is unlikely to happen given the decentralized nature of Ethereum.
The third and final way the Ethereum network could be disrupted is through a denial of service attack. This is where someone tries to flood the network with so much traffic that it becomes overloaded and unusable.
However, this is also unlikely to be successful, as Ethereum has been designed to be resistant to such attacks.
In conclusion, it is highly unlikely that the Ethereum network will be shut down. The only way it could possibly happen is through a coordinated effort by a group of people or entities with a lot of resources, which is highly unlikely given the decentralized nature of Ethereum.