Personally, I think the color and higher luminosity per light bulb (both very desired features at the times of incandescent lighting) were what made those bulbs successful.

Even though those companies made an effort to push the bulbs (and were very happy with the result), and they were overall cheaper for the customer than the long-lived ones, I don't think any of those factors is impactful enough to explain the change on the entire market. Notice that those companies didn't own the entire market at the time, just a huge fraction of it. If people wanted the yellower bulbs, they could get them.