I put solar panels on my house in London this past year. I would have been happy to have hidden them in the roof. Lots of my neighbors are also investigating or getting solar due to the cost of electricity rising and the low cost of panels. I think the solar target market is well into the "normies" who don't care as much about showing off tech stuff.
The problem for me was that integrated options just weren't competitive for a retrofit on an old house. Having 4 panels put up and wired cost a few thousand dollars/pounds and took them about 6 hours to install. An integrated roof solution would have been 30k+ with structural roof work over weeks with permits. I'd probably still be working on it.
So it is more like do you want to pay 5x-10x to HIDE them? That's a small luxary market right now IMO.