Flexgate on 15 inch Macbook Pro

I haven't used my 15 inch Macbook Pro for over 2 years now because Apple failed me. The screen started to have a stage light issue which then progressed to a completely blacked out screen when the screen is raised over 45 degrees (which is... always). The issue was covered for the 13 inch models but for some reason not for the 15 inch models. It's inappropriate that I never got this computer fixed by Apple as this is a problem created BY an innate problem which was present when sold. They informed me I would have to pay for the repair. I am extremely careful and cautious when using my laptops and to this day have never had any issues with tech products except this laptop because of the care I put into them. I am extremely disappointed a repair was not made on my product for free as they have been for the same issue that was present in 13 inch computers. I will never be using any apple products again and my family will be switching everything from phones to laptops in the coming year. Is there really not ONE person who has the power to help in this situation?