That would be true if solar roofs were some novel technology that the rich would adopt first, and then the rest. This is a remix of existing technology, much like the iphone. The rich don't have roofs, they have domes or yachts. The poor don't own roofs. This is directed at the middle class squarely and only. To the extent that richer people adopt this, it's mostly for signaling reasons and not because it affords them some luxury they didn't have (like flights did).

Your analogy is more appropriate for space tourism.