Yes, Marvel and Lucasfilm seem to have been easier acquisitions, good point. And add Pixar to that.

Fox is another story, I believe. 1) it is much larger, just going by the pirchase price. 2) doesn‘t fox also own a lot of distribution, tv channels, and more? Marvel and Lucasfilm never had their own distribution.

Also, to comment on the OP: if you name the purchase price, you should also name the annual revenue and profit of Fox pre-merger. That should put things in perspective.