Capricorns and their stubborness?

I don't know if it's a cap thing or a guy thing but there are two Caps who are stubborn as hell!!!

One of them said, "I'm a stubborn motherfcuker. I want, I get" (his words exactly) and the other Cap said something similar. It's like they share the same mentality.

Both good guys, btw. And they don't know eachother.

I know Tauruses are stubborn. Is this an earth sign trait or what?

I know from experience that Caps don't take no very well.

And I'm dealing with a Taurus that makes me want to grab him by the horns and shake him (I made a thread about him).

well yeah I'm extremely stubborn. And it's kinda like a complex. Like when I'm going to do something....if someone else comes and says "do it now" I won't do it.