It seems like you are trying to say something, but it's not clear exactly what it is. Are you speaking from personal experience? Or guessing at the mindset of others?
It seems pretty obvious that if people are not willing to pay, then there is some sort of problem. Either your business plan isn't quite right, or perhaps the market you thought exists doesn't, or maybe your salesmanship is just very poor.
Part of doing a startup is figuring out which of these is the case. Try asking people for that "some reason". Try changing the price. Try changing your sales pitch. Get feedback and advice from others. Focus on getting answers.
If reading that section helped, I would not have needed to ask for clarification.
As near as I can tell, you are trying to say one of two things: either that the tasks laid out in the article are hard, which is true, or that founders typically think that they are doing those things, but are really not.
It seems pretty obvious that if people are not willing to pay, then there is some sort of problem. Either your business plan isn't quite right, or perhaps the market you thought exists doesn't, or maybe your salesmanship is just very poor.
Part of doing a startup is figuring out which of these is the case. Try asking people for that "some reason". Try changing the price. Try changing your sales pitch. Get feedback and advice from others. Focus on getting answers.