I think the correct phrasing is most can't afford his solar panels even though they want them and his company is incapable of manufacturing the cars that are highly rated and that people want.
I think Musk is a visionary and his biggest problem is he doesn't have a counterpart to build his vision.
Steve Jobs had Steve Wozniak until 1985 then had Jony Ive and Tim Cook until he passed. Jobs had the vision, Ive created the design and Cook made sure it was manufactured. Bill Gates had Paul Allen and then Steve Ballmer. Gates and Allen created the first wave of products but it was Ballmer who put Windows on most every desktop in the 80s and 90s. Hell, Carnegie had Frick. At the end of the day the challenge with Tesla as a company is that it's all about ideas and little in execution. I think Musk is horrible at execution.
Because of this, I love the idea of Apple purchasing Tesla. Musk needs someone like Tim Cook or really a competent operations arm that exists at a company like Apple. It's not going to happen but it would be amazing if it did.