Why did Apple succeed?
If you ask a marketer, you will get the answer “Because of Steve Jobs’s marketing skills.”
If you ask an engineer, you will get the answer “Because of Steve Wozniak’s engineering skills.”
If you talk with a lawyer, you will probably get the answer “Because Apple succeeded in building a strong brand and products which they managed to protect with trademarks and patents.”
Every professional think that their field is what’s important. That is both a blessing and a curse.
But it is important to be aware of it.