No, it is not possible to install one eSIM on several devices simultaneously. An eSIM (embedded SIM) is a digital SIM that is embedded in a device and can be programmed with a mobile network's information.
When you activate an eSIM on a device, the mobile network provider will register the eSIM's unique identification number (EID) with the device's manufacturer. The EID is a unique identifier that cannot be duplicated or shared across multiple devices.
Therefore, you can only use an eSIM on one device at a time. If you want to use the same eSIM on a different device, you would need to deactivate it on the first device and then activate it on the new device.