The Deadend, and the Wastelands of Philosophy and Culture
I think that part of the problem is that people are not accustomed towards philosophy, although there are probably more people interested than one would imagine. I know that if I see a book in a second hand or charity shop by some obscure writer and don't buy it at the time, if I go back a couple of days later it has usually gone. Also, when I go to libraries, often the books which I am looking for are out, so some people are interested.
But, I do think that if philosophy is to survive it will probably need a certain amount of demystifying to happen. Also, I think it would be too much for anyone to start reading writers like Spinoza and Wittgenstein without having read a certain amount of philosophy previously. It would be jumping in the deep end.
But, I guess we all try to do different things. I haven't had any lessons to drive a car whereas most people are desperate to do this.
But, yes, it does seem that Stephen Hawking was the best selling author that not many people read. I struggled my way through though. I think a lot of people wish to study science, but I guess that is partly related to career pathways.
But, it may be that philosophy will remain a minority interest but I do think that the issue is to what extent will it survive at all. I think that it partly depends if it can be a bit less abstract and obscure in some ways. But, even if a lot of people don't read it much I think that the questions will still remain as long as human beings survive.