Agility and velocity are in tension.
In a bigger organization it's not just about you, it's about the ripple effects of your actions in the vast fabric you're a part of.
Your desire to have more agility and autonomy is in a way selfish to the other thousands of people in your org who have to be able to figure out what you're doing and do something that coheres with it.
Do you want local fast or global fast? Global fast will be locally slower.
My friend Dimitri recently distilled this nicely in Aircraft carriers and zodiac boats.