These processes are not similar. The laser does not hit the target, it hits the interior of the hohlraum. Generating x-rays, this creates radiation pressure on

These processes are not similar. The laser does not hit the target, it hits the interior of the hohlraum. Generating x-rays, this creates radiation pressure on the cryogenically cooled target, which is inadequate for fusion without also pulsing a high magnetic field to confine the plasma (this is now inertial/magnetic confinement fusion). The energy output is not sustained for any duration, but rather is nearly instantaneous. The plasma and debris must be cleared of the beam path for the next laser pulse and target injection. These are the hardest remaining engineering problems if you discount the fact that energy must then be absorbed and put to use with constant material degradation of the target chamber and the necessary high output production of tritium filled beryllium capsules. We are unlikely to overcome these challenges for substantially longer than the time period required to generate a functioning EUV machine.