Instead of focusing on arguing with people who say no, it might be easier to get near the people who like to say yes.
As you've probably discovered, great work makes us uncomfortable.
If you wait until there is another case study in your industry, you will be too late!
Choose your customers, choose your future.
If you're not the best in the world at what you do, then you have to get better.
Being charismatic doesn't make you a leader. Being a leader makes you charismatic.