I just got a DIY kit quote for solar and it’s ~$18,000. That would mean a contractor installing is at least $25,000 if not more. That’s a big chunk of change upfront.
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I take some issue with the first point, because the only real competition in $/W is fossil with subsides and maybe wind. If you price carbon so that the externalities are even slightly priced in fossil is much more expensive than PV without PV requiring any subsides. 0.08$/kWh is not a reasonable electricity price to assume for much of the world, even though it might be pretty normal in your country. And along those lines it’s shortsighted to assume the US will be at that price forever.