Everyone is different and how they want there steak cooked.
People equate pink running red, with raw, blood and dangerous to eat.
WHICH it's not.
I schooled my daughter on steak from the age of 7, she only eats mid rare !
Wife was horrified to find pink steak, saying she would not eat it, but after seeing DD she now loves it
Her familly are the same, Christmas dinner they wanted all there meat BURNED (I heard my wife saying)
"hey you should actually eat it how adrian cooks it"
It's all about education and honestly how people like to taste there food.
So with marbling, if you want your steak well done and burn't your wasting all that beautiful marbling.
ALSO marbling is fat and that is cholesterol, so it AINT good for your heart.
So in short if people don't want marbling, that's fine, and if people wanna pay for marbling and don't cook it right
that is always there right.
I only have one adage, you come to my house you eat the food how I cook it or go to macdonalds
(only j/k as a host I will cook the food HOW you like your doneness)
Then don't buy good steaks. You are wasting your money. Marbling is what makes a steak tender and flavorful. Look at Prime beef vs USDA Choice. A perfect example of a steak and a great steak.
When the meat man brings out all the steaks, I will happily wait for you to make your choices.