You have to make changes if you want to limit your reliance on multinational corporations.
I sold my car and didn't buy another, we use one small car between two of us, and drive it as little as possible, spending less than $10 per week on gas. I got a job ten minutes walk from home, we live in the city and walk to the shops which are at the end of the street.
I buy as much as I can from local businesses that sell Australian grown and manufactured products, we also recycle.