They're having trouble sleeping; they've got a lump under the mattress where they're storing their 80 billion dollars.
That is an incredibly naive statement.
Yes, they have a pile of cash.
But you're missing a very key point and that is the 'trickle' effect. Businesses bought Macs and apple displays to use Final Cut then they bought iPhones and iPads, maybe bought service and support, maybe bought other Apple accessories.
If the 'head' is the software and you cut it off, the trickle effect disappears.
In a tight economy, businesses are looking for ways to maximize their workflow which, because time is money, improves their bottom line. Add to that a layer of changing technology which is seeing us switch from traditional TV viewing to portable devices and computers and a pay per episode or season type of model - that pressure is on to keep up with the technology.
Since FCP7 was lacking in a few areas. ie. utilizing the full power of a Mac Pro by not being 64 bit based and not having a definitive workflow for HD footage whereas other software providers were making changes, businesses / studios were waiting for Apple to say, "Hey, here it is!"
That time was long and when they did, I think we can all agree, FCX has major shortcomings for those studios. For a single user like me, FCX is good enough. FCP7 was great too, but actually being able to render in the background while I edit is going to save me time. It would save some of the larger studios time too except they're completely hindered if they can't open projects from FCP7 or share new projects. That would drive me NUTS. Really, it's a slap in the face to those studios. They're back to step one.
So studios are deciding to move. Not all of them will, but when any business decides to shift technology, it's not cheap and because of that, it shouldn't be a short term decision - again, especially in this economy. People will be making decisions for the long future (or they're fiscally irresponsible if they don't).
So yes, they've got billions from the iPhone / iPad purchases and new mac users, but it's a dangerous game to play when you threaten the software 'head' of those folks / markets which kept them afloat until they made the i-devices....
My long 2 cents

Keebler