Solar does not work well in all latitudes. Wind is best placed away from homes and efficient turbines are large, so you need at least municipal installations. Also, highrises don't have enough roof area to supply their occupants with enough energy.

And industrial energy consumers may need hundreds of megawatts for each plant. metal smelters, cement factories, ammonia synthesis, desalination, hydrogen production, transportation, ...

There are lots of non-electricity energy consumers that we want to transition off fossil fuels too.

And if we want to actively put CO2 back into the ground we might need even larger amounts of energy.

So fusion may still have a place to supply these base loads, especially in northern latitudes.