That's because they went dwon the metoo path of Levelized Cost of Energy (LCOE) method that is predicated on averages and trying to project one varaint on a different variant ... trying to imply one suit fits all, some poorly some neatly. Base load is key and without adequate storage volatile renewables are exposed to extremes in on time power demand and nature.
We all know a yacht is cheap to get from A to B, but everyone (except for teh stubborn) is going to take a motor boat when time and convenience is factored in.
