Companies are not your friend who you need to be loyal to. There's a reason noncompetes are illegal in California.

Think of it like if this:

Novo Nordisk hired you to find a cure for obesity.

- This is your full time job, and this is what you are paid for. The company also invests in a lab, in machines, in other employees, etc, so all of you together can figure out.

You find Wegovy, and poof, you run away with the recipe and sell the product on your own.

- Yes, you just scammed your boss, you made him believe that you were working for him, but actually you were using the company resources to your sole benefit.

It's not about loyalty, it's about integrity.

It's the same type of people whom you hire and pay to develop a platform, and then they steal the code, and never deliver this platform to you. Terrible business practices, but isn't it how Facebook happened too ?