Why is mattress selection close to impossible for a anyone with low back pain?

why are mattress makers using different names for the same mattresses in different stores?
Why are they making it so hard to compare mattresses?
Is this some kind of scam?

Why is it that man has gone to moon but mattress makers can't make a mattress for people with low back pain?

I have a herniated disk and wake up with aches and extremely tired every day. Life is hell or close to it. It can't get any worse.

thanks for honest replies.