I currently own a Jamis (MTB) and a Centurion (road). Neither of which was listed.
I did own a Schwinn Mesa and contrary to popular belief, it was a great bike. I bought it through the LBS. Compared to the wally-world rides, it had far better components, but it was also $600 higher. I rode the bike for two years, and although I did replace most of the components to stronger, beefier stuff, it never gave me any problems. If I was the size of the average rider, the original components would still be fine (I'm 6'3" and 215).
Did I catch any flack? You betcha. My friends, who all ride belly-button Specializeds, Treks and Cannondales, used to rag me about my 'Walmart' bike. And that was always at the start of the ride. By the end of the day, no one talked the same trash.
Would I buy another? No. It's not the same design as before. Mine was a cool single-pivot. Imagine a Santa Cruz Heckler with 3" of travel. And before any Santa Cruz fans go nuts over that statement, let me add that the welds were beefed up in the same places that Santa Cruz usually adds to. Shortly after buying the bike, I looked a Heckler over. I won't say anyone copied anyone, but the geometry, the placement and the setup of the rear susp. is similar. Now the Schwinn relies on the GT I-drive design. I don't know if it's a good design or not, I just don't dig it.
Do I fault Schwinn for ruining their name? Nope. All in all, it's all about the dollar. Why does Trek sponsor Lance? So the Lance junkies will sell their kids to get the latest Madone. It's smart marketing, just like putting Spongebob on cereal boxes. How else could Schwinn get more money? Not that it's right, but there are alot more people with $200 in their pocket than $1200 or $2200 or $3200. I'd dare say if any of the companies on that list were large enough to meet production quotas, they'd do the same. But they can't. They can't make enough bikes and they don't have the dough to fund such a transaction.