This is such a sad viewpoint on the world when biodiversity is valued only if it is commercially exploitable. See other threads on what "home in commerce" really means: optimizing for transportability and uniformity at the expense of flavor and nutrition.
Late to the heirloom party, but this summer a friend offered me a cheese and tomato sandwich from her garden. I originally wasn't interested because tomatoes were always kinda meh for me. But after some encouragement I went for it and after the first bite, I realized I just never actually had a truly juicy and flavorful tomato in my life.
When you say something needs to be commercially successful to be viable, be careful what you're optimizing for. Our commercial agriculture systems don't always optimize for the things you're sold in the slick marketing commercials. There's alternative commerce systems out there, but they look like a farmer's market where you might be surprised by a variety you've never tasted before and might have a few blemishes rather than the scale of a national supermarket where both coasts and everyone in between always gets the same consistent but bland red delicious.