I hear that, actually. MSC doesn't split either, if I recall correctly.
Completely agree though that all lines have their strengths. For us, MSC gave us a butler, private pool area with two hot tubs, premium food and snacks, premium beverage package, a bottle of alcohol in our room, access to the thermal suites, and a few other things like wifi, for about the same price as a non-suite on DCL. The biggest downside for us was the shows and loss of rotating dining rooms. The food was fantastic, but it's in the same place each night. I believe Disney is the only cruise line with rotating dining rooms, Virgin is good too, but it's adults only and we have a kid.
We still sail on multiple lines. We're doing Disney in April, Royal Caribbean in the fall, MSC again next year. Royal is fun too, just because of the Aqua Theater and ice skating shows, solid full Broadway shows on some ships too. I actually love the entertainment on Royal more than any cruise line, including Disney. Still, Disney is great all around (especially in service), but at a price.