Hopefully, the people who found America's successor nation sometime in the next few centuries learn from our mistakes, and not be so stupid as to give the government lawmaking power.
I'm not sure it will be that long....
Likely because it lowers the efficiency of the system. Protective glass or Plexiglas above the panels will reflect some of the energy hitting them, convert some to heat, and diffuse some of the rest. Whatever frame system is used will probably not be transparent, so that will create a shadowed area behind it. All of these effects will vary during the day as the sun moves across the FOV of the system, and will be worse the further the sun is from its highest elevation in the sky. The sum total of that is to increase the cost of the energy produced, and require more land area for the same output target.
No doubt but it's a sure sight better than having your 100 million investment go to zero in an hour and leave thousands of home without power for 3 months.
It might not ALL be grift, but the bulk of it is. Anyone want to bet how many of these pop-up home solar companies will be in business after the subsidies dry up? And what do people plan on doing after 20 years when the pile of stuff on the roof is non-functional, the company that nominally owns it is gone, and the whole pile needs to be disposed of as hazardous waste?
The phrase "with every breath you take" comes to mind.