I like to remind people now and again that humankind's very first attempt at inertial confinement fusion was wildly, ridiculously, terrifyingly successful: https://en.wikipedia.org/wiki/Ivy_Mike.

These may seem like tiny steps forward, but once the genie is out of the bottle it's going to be nuts.

Also this laser tech is ancient, once there's a major economic driver behind it I expect they'll rapidly advance.