The problem is that most people really don't think a fancy toilet would be any better than a normal one. Maybe even worse, based on the fancy and expensive low

The problem is that most people really don't think a fancy toilet would be any better than a normal one. Maybe even worse, based on the fancy and expensive low-flow toilets they've seen that don't work well. It's not a "pain point". So why would you spend any money on it at all?